diff --git a/core/src/mindustry/content/Blocks.java b/core/src/mindustry/content/Blocks.java
index c1e18f89e9..a9949e55e5 100644
--- a/core/src/mindustry/content/Blocks.java
+++ b/core/src/mindustry/content/Blocks.java
@@ -209,6 +209,7 @@ public class Blocks implements ContentList{
             liquidDrop = Liquids.slag;
             isLiquid = true;
             cacheLayer = CacheLayer.slag;
+            attributes.set(Attribute.heat, 0.85f);
         }};
 
         stone = new Floor("stone"){{
@@ -1131,6 +1132,7 @@ public class Blocks implements ContentList{
             powerProduction = 1.8f;
             generateEffect = Fx.redgeneratespark;
             size = 2;
+            floating = true;
         }};
 
         turbineGenerator = new BurnerGenerator("turbine-generator"){{
diff --git a/core/src/mindustry/content/UnitTypes.java b/core/src/mindustry/content/UnitTypes.java
index d35a3092d9..0294cc6908 100644
--- a/core/src/mindustry/content/UnitTypes.java
+++ b/core/src/mindustry/content/UnitTypes.java
@@ -336,7 +336,7 @@ public class UnitTypes implements ContentList{
                 shootSound = Sounds.laser;
 
                 bullet = new LaserBulletType(){{
-                    damage = 30f;
+                    damage = 40f;
                     recoil = 1f;
                     sideAngle = 45f;
                     sideWidth = 1f;
diff --git a/core/src/mindustry/core/World.java b/core/src/mindustry/core/World.java
index 6f996746a6..dcc9fb4812 100644
--- a/core/src/mindustry/core/World.java
+++ b/core/src/mindustry/core/World.java
@@ -192,9 +192,7 @@ public class World{
             }
         }
 
-        if(!headless){
-            addDarkness(tiles);
-        }
+        addDarkness(tiles);
 
         Groups.resize(-finalWorldBounds, -finalWorldBounds, tiles.width * tilesize + finalWorldBounds * 2, tiles.height * tilesize + finalWorldBounds * 2);
 
diff --git a/core/src/mindustry/world/blocks/defense/PointDefenseTurret.java b/core/src/mindustry/world/blocks/defense/PointDefenseTurret.java
index a3fffe06f3..4e3e60395a 100644
--- a/core/src/mindustry/world/blocks/defense/PointDefenseTurret.java
+++ b/core/src/mindustry/world/blocks/defense/PointDefenseTurret.java
@@ -72,8 +72,13 @@ public class PointDefenseTurret extends Block{
                 target = Groups.bullet.intersect(x - range, y - range, range*2, range*2).min(b -> b.team == team || !b.type().hittable ? Float.MAX_VALUE : b.dst2(this));
             }
 
+            //pooled bullets
+            if(target != null && !target.isAdded()){
+                target = null;
+            }
+
             //look at target
-            if(target != null && target.within(this, range) && target.team != team && target.type().hittable){
+            if(target != null && target.within(this, range) && target.team != team && target.type() != null && target.type().hittable){
                 float dest = angleTo(target);
                 rotation = Angles.moveToward(rotation, dest, rotateSpeed * edelta());
                 reload -= edelta();