diff --git a/Character.cpp b/Character.cpp
index c94b1e5..c33971c 100644
--- a/Character.cpp
+++ b/Character.cpp
@@ -434,6 +434,17 @@ bool Character::CanAct() const {
     return true;
 }
 
+bool Character::IsInvulnerable() const {
+    for (const StatusEffect& status : statuses)
+        if (GetStatusEffectInfo(status.type).invulnerable)
+            return true;
+    return false;
+}
+
+bool Character::HasHyperArmor() const {
+    return body && body->combat.HasHyperArmor();
+}
+
 bool Character::DodgesHits() const {
     for (const StatusEffect& status : statuses)
         if (GetStatusEffectInfo(status.type).dodgesHits)
diff --git a/Character.h b/Character.h
index b0e524f..f4b62f9 100644
--- a/Character.h
+++ b/Character.h
@@ -220,6 +220,8 @@ public:
     bool IsKnockedDown() const { return HasStatus(StatusEffect::Type::Knockdown); }
     bool CanAct() const;        // not stunned or held by a status effect
     bool DodgesHits() const;    // a status effect keeps ordinary hits off it
+    bool IsInvulnerable() const;   // has iframes: a status effect keeps every hit off it
+    bool HasHyperArmor() const;    // in a move that takes hits without flinching, being stunned or pushed about
     const std::vector<StatusEffect>& GetStatuses() const { return statuses; }
 
     // Recoils from a hit: whatever swing it was in is cut off and its flinch plays over everything, if it has one.
diff --git a/Combat.cpp b/Combat.cpp
index 670068f..5135e8e 100644
--- a/Combat.cpp
+++ b/Combat.cpp
@@ -96,6 +96,14 @@ bool CharacterCombat::IsAbilityPivoting() const {
     return move.pivots && (move.pivotEndFrame <= 0.0f || abilityTime < AbilityFrameTime(move, move.pivotEndFrame));
 }
 
+bool CharacterCombat::HasHyperArmor() const {
+    if (ability < 0)
+        return false;
+    const Ability& move = abilities[ability];
+    return move.hyperArmor && abilityTime >= AbilityFrameTime(move, move.hyperArmorStartFrame)
+        && (move.hyperArmorEndFrame <= 0.0f || abilityTime < AbilityFrameTime(move, move.hyperArmorEndFrame));
+}
+
 void CharacterCombat::StartAbility(CharacterBody& body, int index) {
     // It takes over the action layer, so a swing in its recovery is over and the combo starts again after
     current = -1;
diff --git a/Combat.h b/Combat.h
index 8bf4bb9..29ace2f 100644
--- a/Combat.h
+++ b/Combat.h
@@ -53,6 +53,10 @@ struct Ability {
     float moveSpeedMultiplier = 0.5f;   // of walking speed while it's going
     bool pivots = false;             // keeps turning to face where the player looks while it's going, so it can be aimed
     float pivotEndFrame = 0.0f;      // stops pivoting here, 0 pivots all the way through
+    // Hyper armor: hits still hurt, but don't flinch, stun, knock back or knock down the user, so the move carries on
+    bool hyperArmor = false;
+    float hyperArmorStartFrame = 0.0f;
+    float hyperArmorEndFrame = 0.0f; // 0 keeps it to the end
     std::string sound;               // played where it goes off, as it does. Empty plays nothing.
     float screenshake = 0.0f;        // how hard the camera shakes as it goes off, when it's the player's
 
@@ -142,6 +146,9 @@ public:
     // Whether the ability it's in turns it to face where it's aimed right now
     bool IsAbilityPivoting() const;
 
+    // Whether the ability it's in has hyper armor right now
+    bool HasHyperArmor() const;
+
     // Whether abilities[index] can be used now, and how much of its cooldown is left, 1 just used to 0 ready
     bool IsAbilityReady(int index) const;
     float GetCooldownFraction(int index) const;
diff --git a/Engine.cpp b/Engine.cpp
index 23ea7b3..f4e8f1f 100644
--- a/Engine.cpp
+++ b/Engine.cpp
@@ -226,7 +226,7 @@ void Engine::Initiate()
         shoot.knockback = 1.5f;
         shoot.stun = 0.8f;
         shoot.sound = "assets/gunshot.mp3";
-        shoot.screenshake = 0.45f;          // a punch landing is 0.3, the combo finisher 0.6
+        shoot.screenshake = 0.65f;          // a punch landing is 0.3, the combo finisher 0.6
         if (std::filesystem::exists("assets/rifleexecutionhit.glb"))   // whoever it kills goes down like this, filmed by its Camera bone
             shoot.killAnimation = charactermanager->LoadAnimation("rifleexecutionhit", "assets/rifleexecutionhit.glb", "humanoid");
         shoot.killSounds = { { 40.0f, "assets/dramaticwoosh.mp3" }, { 60.0f, "assets/glassbreak.mp3" } };
@@ -238,7 +238,7 @@ void Engine::Initiate()
         // 2: a switchblade out of nowhere into whoever's in front. It stays in them a while, bleeding them.
         Ability stab;
         stab.name = "Stab";
-        stab.description = "Pull a switchblade and stab whoever is right in front of you. The knife stays in them, making them bleed. Stuns what it hits.";
+        stab.description = "Pull a switchblade and stab whoever is right in front of you. The knife stays in them, making them bleed. Stuns what it hits. Hyper armor: hits don't stop it.";
         stab.effect = Ability::Effect::Stab;
         stab.animation = charactermanager->LoadAnimation("riflestab", "assets/riflestab.glb", "humanoid");   // brings the Knife bone
         stab.lastFrame = 60.0f;         // 1 s at 60 fps, played at its own speed
@@ -246,6 +246,7 @@ void Engine::Initiate()
         stab.hitExitFrame = 50.0f;      // landing it, it's over 10 frames early
         stab.cooldown = 3.0f;
         stab.moveSpeedMultiplier = 0.0f;
+        stab.hyperArmor = true;         // trades hits rather than being knocked out of it
         stab.lungeDistance = 1.5f;      // steps in over the first 15 frames
         stab.lungeStartFrame = 0.0f;
         stab.lungeEndFrame = 15.0f;
@@ -481,7 +482,14 @@ void Engine::Initiate()
     // The camera shakes by shake when it was the player's.
     auto LandHit = [&](const Character* attacker, Character& target, float damage, const glm::vec3& shove, float shake,
                        float stun) {
+        // Hyper armor takes the damage and nothing else
+        const bool armored = target.HasHyperArmor();
         Hurt(target, damage);
+        if (armored && !target.IsDead()) {
+            if (attacker == controlled)
+                camera->AddScreenshake(shake);
+            return;
+        }
         target.Flinch();   // nothing if that was the hit that put them down
         target.Stun(stun);
         if (target.ragdoll) {
@@ -968,7 +976,8 @@ void Engine::Initiate()
         float life = 0.0f;   // real seconds left, 0 when it's free
     };
     std::vector<Tracer> tracers;
-    const float tracerTime = 0.06f;
+    const float tracerTime = 0.16f;          // real seconds, thinning out to nothing over it
+    const float tracerThickness = 0.07f;
 
     auto ShowTracer = [&](const glm::vec3& from, const glm::vec3& direction, float length) {
         Tracer* tracer = nullptr;
@@ -979,12 +988,12 @@ void Engine::Initiate()
             tracer = &tracers.back();
             tracer->mesh = CreateCubeMesh();
             tracer->mesh->name = "tracer";
-            tracer->mesh->colorOverride = glm::vec4(1.0f, 0.86f, 0.55f, 1.0f);
+            tracer->mesh->colorOverride = glm::vec4(1.0f, 0.82f, 0.45f, 1.0f);
             tracer->mesh->emissive = 1.0f;
             tracer->mesh->castshadow = false;
         }
         // A thin box from end to end, its length along its own z
-        tracer->mesh->t.ScaleTo({ 0.025f, 0.025f, length });
+        tracer->mesh->t.ScaleTo({ tracerThickness, tracerThickness, length });
         tracer->mesh->t.RotateToQuaternion(LookAt(direction));
         tracer->mesh->t.TranslateTo(from + direction * (length * 0.5f));
         if (tracer->life <= 0.0f)
@@ -1004,10 +1013,66 @@ void Engine::Initiate()
     muzzleSparks->emitangle = glm::vec3(0.7f, 0.7f, 0.0f);   // radians of spread
     muzzleSparks->facecamera = true;
     muzzleSparks->BindToRenderSystem();
-    const int sparksPerShot = 14;
+    const int sparksPerShot = 32;
+
+    // The flash itself: a few big bright blobs right on the muzzle for a frame or two
+    ParticleEmitter* muzzleFlash = new ParticleEmitter();
+    muzzleFlash->name = "muzzle flash";
+    muzzleFlash->surface = SurfaceTexture::Stretched(blanktex);
+    muzzleFlash->opaque = false;
+    muzzleFlash->color = glm::vec4(3.0f, 2.2f, 1.0f, 1.0f);
+    muzzleFlash->size = glm::vec3(0.32f);
+    muzzleFlash->speed = 2.5f;
+    muzzleFlash->lifespan = 0.05f;
+    muzzleFlash->emitangle = glm::vec3(0.5f, 0.5f, 0.0f);
+    muzzleFlash->facecamera = true;
+    muzzleFlash->BindToRenderSystem();
+    const int flashesPerShot = 6;
+
+    // Smoke hanging about the barrel afterwards, drifting up
+    ParticleEmitter* muzzleSmoke = new ParticleEmitter();
+    muzzleSmoke->name = "muzzle smoke";
+    muzzleSmoke->surface = SurfaceTexture::Stretched(blanktex);
+    muzzleSmoke->opaque = false;
+    muzzleSmoke->color = glm::vec4(0.55f, 0.55f, 0.55f, 0.35f);
+    muzzleSmoke->size = glm::vec3(0.22f);
+    muzzleSmoke->speed = 1.2f;
+    muzzleSmoke->lifespan = 0.7f;
+    muzzleSmoke->emitangle = glm::vec3(1.2f, 1.2f, 0.0f);
+    muzzleSmoke->gravity = glm::vec3(0.0f, 1.5f, 0.0f);
+    muzzleSmoke->facecamera = true;
+    muzzleSmoke->BindToRenderSystem();
+    const int smokePerShot = 8;
+
+    // Sparks off whoever it hits, back toward the shooter
+    ParticleEmitter* impactSparks = new ParticleEmitter();
+    impactSparks->name = "impact sparks";
+    impactSparks->surface = SurfaceTexture::Stretched(blanktex);
+    impactSparks->opaque = false;
+    impactSparks->color = glm::vec4(2.0f, 1.4f, 0.6f, 1.0f);
+    impactSparks->size = glm::vec3(0.05f);
+    impactSparks->speed = 6.0f;
+    impactSparks->lifespan = 0.2f;
+    impactSparks->emitangle = glm::vec3(1.6f, 1.6f, 0.0f);
+    impactSparks->gravity = glm::vec3(0.0f, -12.0f, 0.0f);
+    impactSparks->facecamera = true;
+    impactSparks->BindToRenderSystem();
+    const int impactSparksPerHit = 24;
+
+    // Lights up everything around the gun for a moment
+    PointLight* muzzleLight = rendersystem->lighting->AddPointLight(glm::vec3(0.0f), glm::vec3(1.0f, 0.7f, 0.35f), 0.0f, 8.0f);
+    muzzleLight->castShadow = false;   // too quick to be worth six shadow renders a frame
+    const float muzzleLightIntensity = 160.0f;
+    const float muzzleLightTime = 0.08f;     // real seconds
+    float muzzleLightLeft = 0.0f;
 
     auto UpdateTracers = [&](float dt) {
         muzzleSparks->Step(dt);
+        muzzleFlash->Step(dt);
+        muzzleSmoke->Step(dt);
+        impactSparks->Step(dt);
+        muzzleLightLeft = std::max(muzzleLightLeft - dt, 0.0f);
+        muzzleLight->intensity = muzzleLightIntensity * (muzzleLightLeft / muzzleLightTime);
         for (Tracer& tracer : tracers) {
             if (tracer.life <= 0.0f)
                 continue;
@@ -1015,7 +1080,11 @@ void Engine::Initiate()
             if (tracer.life <= 0.0f) {
                 tracer.life = 0.0f;
                 rendersystem->RemoveRenderable(tracer.mesh);
+                continue;
             }
+            const float thickness = tracerThickness * (tracer.life / tracerTime);
+            const glm::vec3 scale = tracer.mesh->t.GetScale();
+            tracer.mesh->t.ScaleTo({ thickness, thickness, scale.z });
         }
         };
 
@@ -1042,6 +1111,13 @@ void Engine::Initiate()
         shot.stun = ability.stun;
         shot.killAnimation = ability.killAnimation;
         shot.killAbility = &ability;
+        shot.onHit = [&, direction](Character& target) {
+            const glm::vec3 at = target.body->t.GetTranslation() + glm::vec3(0.0f, target.body->t.GetScale().y * 0.2f, 0.0f);
+            impactSparks->t.TranslateTo(at);
+            impactSparks->t.RotateToQuaternion(LookAt(-direction));
+            for (int i = 0; i < impactSparksPerHit; i++)
+                impactSparks->Emit();
+            };
         hitboxsystem->Add(shot);
         ShowTracer(origin, direction, ability.range);
 
@@ -1052,6 +1128,16 @@ void Engine::Initiate()
         muzzleSparks->t.RotateToQuaternion(LookAt(direction));
         for (int i = 0; i < sparksPerShot; i++)
             muzzleSparks->Emit();
+        muzzleFlash->t.TranslateTo(origin + direction * 0.15f);
+        muzzleFlash->t.RotateToQuaternion(LookAt(direction));
+        for (int i = 0; i < flashesPerShot; i++)
+            muzzleFlash->Emit();
+        muzzleSmoke->t.TranslateTo(origin);
+        muzzleSmoke->t.RotateToQuaternion(LookAt(direction));
+        for (int i = 0; i < smokePerShot; i++)
+            muzzleSmoke->Emit();
+        muzzleLight->position = origin + direction * 0.3f;
+        muzzleLightLeft = muzzleLightTime;
 
         // Its own channel every time, so quick shots overlap rather than cutting each other off
         if (!ability.sound.empty())
@@ -1179,7 +1265,7 @@ void Engine::Initiate()
     auto ApplyAbilityStatus = [&](Character& user, const Ability& ability) {
         const unsigned int use = user.body->combat.GetAbilityUse();
         for (const AbilityHit& hit : abilityHits)
-            if (hit.user == &user && hit.use == use && !hit.target->IsDead())
+            if (hit.user == &user && hit.use == use && !hit.target->IsDead() && !hit.target->IsInvulnerable())
                 hit.target->AddStatus(ability.status, ability.statusTime);
         };
 
@@ -1490,6 +1576,7 @@ void Engine::Initiate()
     // ------------------------------------------------------------------------
     struct Execution {
         Character* victim = nullptr;
+        Character* killer = nullptr;     // has iframes until it's over, so the cutscene can't be cut short
         Animation* animation = nullptr;
         float timeLeft = 0.0f;           // real seconds
         float time = 0.0f;               // real seconds since it started
@@ -1526,6 +1613,9 @@ void Engine::Initiate()
         const float ticksPerSecond = animation->GetTicksPerSecond() > 0.0f ? animation->GetTicksPerSecond() : 25.0f;
         execution.timeLeft = animation->GetDuration() / ticksPerSecond;
         execution.filmed = (&victim == controlled || killer == controlled) && !IsFilming();
+        execution.killer = const_cast<Character*>(killer);
+        if (execution.killer && execution.killer != &victim)
+            execution.killer->AddStatus(StatusEffect::Type::Invulnerable);
         if (ability && execution.filmed)
             execution.sounds = ability->killSounds;
         executions.push_back(execution);
@@ -1560,6 +1650,13 @@ void Engine::Initiate()
 
             // Over: up again somewhere else, or for those that heal on death, right where they are
             victim.RemoveStatus(StatusEffect::Type::Executed);
+            if (Character* killer = execution.killer) {
+                // Unless it's in another one of its own
+                const bool stillExecuting = std::any_of(executions.begin(), executions.end(), [&](const Execution& other) {
+                    return &other != &execution && other.killer == killer; });
+                if (!stillExecuting)
+                    killer->RemoveStatus(StatusEffect::Type::Invulnerable);
+            }
             if (Animator* action = victim.body->actionAnimator; action && action->m_CurrentAnimation == execution.animation) {
                 action->holdsAtEnd = false;
                 action->StopAnimation();
@@ -1865,7 +1962,7 @@ void Engine::Initiate()
                 StartExecution(target, attacker, hitbox.killAnimation, hitbox.killAbility);
                 return;
             }
-            if (hitbox.knockdown > 0.0f)
+            if (hitbox.knockdown > 0.0f && !target.HasHyperArmor())
                 target.Knockdown(hitbox.knockdown);
             if (hitbox.onHit)
                 hitbox.onHit(target);
diff --git a/Hitbox.cpp b/Hitbox.cpp
index c6fd7cd..ddd9808 100644
--- a/Hitbox.cpp
+++ b/Hitbox.cpp
@@ -36,7 +36,7 @@ void HitboxSystem::Resolve(const std::vector<Character*>& characters, const HitH
         for (Character* target : characters) {
             if (target == hitbox.owner || target->IsDead() || target->ragdoll || !target->body)
                 continue;
-            if (target->DodgesHits() && !hitbox.hitsKnockedDown)
+            if (target->IsInvulnerable() || (target->DodgesHits() && !hitbox.hitsKnockedDown))
                 continue;
             if (hitbox.swing != 0) {
                 const std::vector<const Character*>& already = hitBySwing[hitbox.swing];
diff --git a/StatusEffect.h b/StatusEffect.h
index 698f1d5..d64c61f 100644
--- a/StatusEffect.h
+++ b/StatusEffect.h
@@ -8,7 +8,8 @@ struct StatusEffect {
     enum class Type {
         HeavyGravity,   // pulled down harder: slower, can't jump, and falls faster
         Knockdown,      // on the floor: can't do anything, and only attacks that hit the knocked down can hit it
-        Executed        // playing out how it was killed: can't do anything or be hit until it's over
+        Executed,       // playing out how it was killed: can't do anything or be hit until it's over
+        Invulnerable    // iframes: nothing at all can hit it, not even what hits the knocked down
     };
 
     Type type = Type::HeavyGravity;
@@ -23,13 +24,17 @@ struct StatusEffectInfo {
     bool preventsJumping = false;
     bool preventsActing = false;      // can't move, turn, attack or anything else, like a stun
     bool dodgesHits = false;          // only hitboxes that hit the knocked down can touch it
+    bool invulnerable = false;        // no hitbox can touch it
 };
 
 inline const StatusEffectInfo& GetStatusEffectInfo(StatusEffect::Type type) {
     static const StatusEffectInfo heavyGravity = { "HEAVY", 0.5f, 3.0f, true };
     static const StatusEffectInfo knockdown = { "KNOCKED DOWN", 0.0f, 1.0f, true, true, true };
-    static const StatusEffectInfo executed = { "", 0.0f, 1.0f, true, true, true };
+    static const StatusEffectInfo executed = { "", 0.0f, 1.0f, true, true, true, true };
+    static const StatusEffectInfo invulnerable = { "", 1.0f, 1.0f, false, false, false, true };
     switch (type) {
+    case StatusEffect::Type::Invulnerable:
+        return invulnerable;
     case StatusEffect::Type::Executed:
         return executed;
     case StatusEffect::Type::Knockdown:
diff --git a/emmd/x64/Debug/Character.obj b/emmd/x64/Debug/Character.obj
index 4bba9cc..8c03b6a 100644
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diff --git a/emmd/x64/Debug/CharacterManager.obj b/emmd/x64/Debug/CharacterManager.obj
index 630db76..e8467f5 100644
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diff --git a/emmd/x64/Debug/CharacterMind.obj b/emmd/x64/Debug/CharacterMind.obj
index a85306f..a57d4c8 100644
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diff --git a/emmd/x64/Debug/CollisionMesh.obj b/emmd/x64/Debug/CollisionMesh.obj
index 48126c2..027f74d 100644
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diff --git a/emmd/x64/Debug/Combat.obj b/emmd/x64/Debug/Combat.obj
index 64d9f57..45384c5 100644
Binary files a/emmd/x64/Debug/Combat.obj and b/emmd/x64/Debug/Combat.obj differ
diff --git a/emmd/x64/Debug/Console.obj b/emmd/x64/Debug/Console.obj
index 3a06c8c..7fe9ee8 100644
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diff --git a/emmd/x64/Debug/Cubemap.obj b/emmd/x64/Debug/Cubemap.obj
index e5379c7..27a5565 100644
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diff --git a/emmd/x64/Debug/EBO.obj b/emmd/x64/Debug/EBO.obj
index 894a529..853187c 100644
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diff --git a/emmd/x64/Debug/Engine.obj b/emmd/x64/Debug/Engine.obj
index 0730769..e525a68 100644
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diff --git a/emmd/x64/Debug/Hitbox.obj b/emmd/x64/Debug/Hitbox.obj
index 89c9cc4..a1c12b2 100644
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diff --git a/emmd/x64/Debug/Hud.obj b/emmd/x64/Debug/Hud.obj
index d646a1d..484f63a 100644
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diff --git a/emmd/x64/Debug/Mouse.obj b/emmd/x64/Debug/Mouse.obj
index 54de62f..c758f60 100644
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diff --git a/emmd/x64/Debug/Physics.obj b/emmd/x64/Debug/Physics.obj
index 3e8bab1..8d5f883 100644
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diff --git a/emmd/x64/Debug/Ragdoll.obj b/emmd/x64/Debug/Ragdoll.obj
index 45d7d5c..14289e2 100644
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diff --git a/emmd/x64/Debug/RenderSystem.obj b/emmd/x64/Debug/RenderSystem.obj
index 0a92d23..9c0a1c4 100644
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diff --git a/emmd/x64/Debug/ResourceManager.obj b/emmd/x64/Debug/ResourceManager.obj
index bab000b..39da2f5 100644
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diff --git a/emmd/x64/Debug/Sound.obj b/emmd/x64/Debug/Sound.obj
index b3224fc..adf8723 100644
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diff --git a/emmd/x64/Debug/SoundSystem.obj b/emmd/x64/Debug/SoundSystem.obj
index fa6516d..adf6303 100644
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diff --git a/emmd/x64/Debug/StatBar.obj b/emmd/x64/Debug/StatBar.obj
index ea68857..7686c70 100644
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diff --git a/emmd/x64/Debug/VAO.obj b/emmd/x64/Debug/VAO.obj
index f497c74..9081bea 100644
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diff --git a/emmd/x64/Debug/VBO.obj b/emmd/x64/Debug/VBO.obj
index 871c01a..a683069 100644
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diff --git a/emmd/x64/Debug/emmd.ilk b/emmd/x64/Debug/emmd.ilk
index 5930b0f..c336205 100644
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diff --git a/emmd/x64/Debug/emmd.tlog/link.read.1.tlog b/emmd/x64/Debug/emmd.tlog/link.read.1.tlog
index 7603e86..ba82a3b 100644
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diff --git a/emmd/x64/Debug/glad.obj b/emmd/x64/Debug/glad.obj
index 441b904..2181da5 100644
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diff --git a/emmd/x64/Debug/main.obj b/emmd/x64/Debug/main.obj
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