diff --git a/core/src/mindustry/ai/Pathfinder.java b/core/src/mindustry/ai/Pathfinder.java
index 50b8e83d83..06550d602c 100644
--- a/core/src/mindustry/ai/Pathfinder.java
+++ b/core/src/mindustry/ai/Pathfinder.java
@@ -238,7 +238,7 @@ public class Pathfinder implements Runnable{
     }
 
     private PathTarget getTarget(Position position){
-        return targetCache.getOr(position, () -> new PositionTarget(position));
+        return targetCache.get(position, () -> new PositionTarget(position));
     }
 
     /** @return whether a tile can be passed through by this team. Pathfinding thread only. */
diff --git a/core/src/mindustry/audio/LoopControl.java b/core/src/mindustry/audio/LoopControl.java
index 6ed4035ef1..1b102ab0a4 100644
--- a/core/src/mindustry/audio/LoopControl.java
+++ b/core/src/mindustry/audio/LoopControl.java
@@ -16,7 +16,7 @@ public class LoopControl{
         float baseVol = sound.calcFalloff(pos.getX(), pos.getY());
         float vol = baseVol * volume;
 
-        SoundData data = sounds.getOr(sound, SoundData::new);
+        SoundData data = sounds.get(sound, SoundData::new);
         data.volume += vol;
         data.volume = Mathf.clamp(data.volume, 0f, 1f);
         data.total += baseVol;
diff --git a/core/src/mindustry/core/NetClient.java b/core/src/mindustry/core/NetClient.java
index 7aa36a7981..8117bedd62 100644
--- a/core/src/mindustry/core/NetClient.java
+++ b/core/src/mindustry/core/NetClient.java
@@ -130,11 +130,11 @@ public class NetClient implements ApplicationListener{
     }
 
     public void addPacketHandler(String type, Cons<String> handler){
-        customPacketHandlers.getOr(type, Array::new).add(handler);
+        customPacketHandlers.get(type, Array::new).add(handler);
     }
 
     public Array<Cons<String>> getPacketHandlers(String type){
-        return customPacketHandlers.getOr(type, Array::new);
+        return customPacketHandlers.get(type, Array::new);
     }
 
     @Remote(targets = Loc.server, variants = Variant.both)
diff --git a/core/src/mindustry/core/NetServer.java b/core/src/mindustry/core/NetServer.java
index ac8c06e5fb..e36f61829f 100644
--- a/core/src/mindustry/core/NetServer.java
+++ b/core/src/mindustry/core/NetServer.java
@@ -393,7 +393,7 @@ public class NetServer implements ApplicationListener{
                     }else if(found.team() != player.team()){
                         player.sendMessage("[scarlet]Only players on your team can be kicked.");
                     }else{
-                        Timekeeper vtime = cooldowns.getOr(player.uuid(), () -> new Timekeeper(voteCooldown));
+                        Timekeeper vtime = cooldowns.get(player.uuid(), () -> new Timekeeper(voteCooldown));
 
                         if(!vtime.get()){
                             player.sendMessage("[scarlet]You must wait " + voteCooldown/60 + " minutes between votekicks.");
@@ -481,11 +481,11 @@ public class NetServer implements ApplicationListener{
     }
 
     public void addPacketHandler(String type, Cons2<Playerc, String> handler){
-        customPacketHandlers.getOr(type, Array::new).add(handler);
+        customPacketHandlers.get(type, Array::new).add(handler);
     }
 
     public Array<Cons2<Playerc, String>> getPacketHandlers(String type){
-        return customPacketHandlers.getOr(type, Array::new);
+        return customPacketHandlers.get(type, Array::new);
     }
 
     public static void onDisconnect(Playerc player, String reason){
diff --git a/core/src/mindustry/entities/comp/HealthComp.java b/core/src/mindustry/entities/comp/HealthComp.java
index 5840b7f23a..d906adb714 100644
--- a/core/src/mindustry/entities/comp/HealthComp.java
+++ b/core/src/mindustry/entities/comp/HealthComp.java
@@ -2,7 +2,6 @@ package mindustry.entities.comp;
 
 import arc.math.*;
 import arc.util.*;
-import mindustry.*;
 import mindustry.annotations.Annotations.*;
 import mindustry.gen.*;
 
@@ -53,7 +52,7 @@ abstract class HealthComp implements Entityc{
     /** Damage and pierce armor. */
     void damagePierce(float amount, boolean withEffect){
         if(this instanceof Shieldc){
-            damage(amount / Math.max(1f - ((Shieldc)this).armor(), Vars.minArmorDamage), withEffect);
+            damage(amount + ((Shieldc)this).armor(), withEffect);
         }else{
             damage(amount, withEffect);
         }
diff --git a/core/src/mindustry/entities/comp/PlayerComp.java b/core/src/mindustry/entities/comp/PlayerComp.java
index 4789c97561..1516d7ad95 100644
--- a/core/src/mindustry/entities/comp/PlayerComp.java
+++ b/core/src/mindustry/entities/comp/PlayerComp.java
@@ -12,6 +12,7 @@ import mindustry.annotations.Annotations.*;
 import mindustry.core.*;
 import mindustry.entities.units.*;
 import mindustry.game.*;
+import mindustry.game.EventType.*;
 import mindustry.gen.*;
 import mindustry.graphics.*;
 import mindustry.net.Administration.*;
@@ -143,6 +144,8 @@ abstract class PlayerComp implements UnitController, Entityc, Syncc, Timerc, Dra
             unit.team(team);
             unit.controller(this);
         }
+
+        Events.fire(new UnitChangeEvent((Playerc)this, unit));
     }
 
     boolean dead(){
diff --git a/core/src/mindustry/entities/comp/ShieldComp.java b/core/src/mindustry/entities/comp/ShieldComp.java
index 0d1257b02a..204efff128 100644
--- a/core/src/mindustry/entities/comp/ShieldComp.java
+++ b/core/src/mindustry/entities/comp/ShieldComp.java
@@ -23,7 +23,8 @@ abstract class ShieldComp implements Healthc, Posc{
     @Override
     public void damage(float amount){
         //apply armor
-        amount *= Math.max(1f - armor, minArmorDamage);
+        //TODO balancing of armor stats & minArmorDamage
+        amount = Math.max(amount - armor, minArmorDamage * amount);
 
         hitTime = 1f;
 
diff --git a/core/src/mindustry/game/EventType.java b/core/src/mindustry/game/EventType.java
index 86d4d58992..cad55d7931 100644
--- a/core/src/mindustry/game/EventType.java
+++ b/core/src/mindustry/game/EventType.java
@@ -289,14 +289,13 @@ public class EventType{
         }
     }
 
-    //TODO rename
-    public static class MechChangeEvent{
+    public static class UnitChangeEvent{
         public final Playerc player;
-        public final UnitType mech;
+        public final Unitc unit;
 
-        public MechChangeEvent(Playerc player, UnitType mech){
+        public UnitChangeEvent(Playerc player, Unitc unit){
             this.player = player;
-            this.mech = mech;
+            this.unit = unit;
         }
     }
 
diff --git a/core/src/mindustry/game/Stats.java b/core/src/mindustry/game/Stats.java
index fcc388ea74..bc2147c7e8 100644
--- a/core/src/mindustry/game/Stats.java
+++ b/core/src/mindustry/game/Stats.java
@@ -5,9 +5,12 @@ import arc.struct.*;
 import arc.util.*;
 import mindustry.type.*;
 import mindustry.world.blocks.storage.CoreBlock.*;
+import mindustry.world.modules.*;
 
 import static mindustry.Vars.*;
 
+//TODO more stats:
+//- units constructed
 public class Stats{
     /** export window size in seconds */
     private static final int exportWindow = 60;
@@ -30,6 +33,8 @@ public class Stats{
     public int buildingsDestroyed;
     /** Export statistics. */
     public ObjectMap<Item, ExportStat> export = new ObjectMap<>();
+    /** Items stored in all cores. Used for the campaign. */
+    public ObjectIntMap<Item> coreItems = new ObjectIntMap<>();
 
     /** Counter refresh state. */
     private transient Interval time = new Interval();
@@ -43,19 +48,30 @@ public class Stats{
 
     /** Updates export statistics. */
     public void handleItemExport(Item item, int amount){
-        export.getOr(item, ExportStat::new).counter += amount;
+        export.get(item, ExportStat::new).counter += amount;
     }
 
     /** Subtracts from export statistics. */
     public void handleItemImport(Item item, int amount){
-        export.getOr(item, ExportStat::new).counter -= amount;
+        export.get(item, ExportStat::new).counter -= amount;
     }
 
     public float getExport(Item item){
-        return export.getOr(item, ExportStat::new).mean;
+        return export.get(item, ExportStat::new).mean;
     }
 
     public void update(){
+        //update core items
+        CoreEntity entity = state.rules.defaultTeam.core();
+        if(entity != null){
+            ItemModule items = entity.items;
+            for(int i = 0; i < items.length(); i++){
+                coreItems.put(content.item(i), items.get(i));
+            }
+        }else{
+            coreItems.clear();
+        }
+        
         //create last stored core items
         if(lastCoreItems == null){
             lastCoreItems = new int[content.items().size];
diff --git a/core/src/mindustry/mod/Mods.java b/core/src/mindustry/mod/Mods.java
index 0212607b1a..9961eb8f8c 100644
--- a/core/src/mindustry/mod/Mods.java
+++ b/core/src/mindustry/mod/Mods.java
@@ -346,7 +346,7 @@ public class Mods implements Loadable{
                 for(Fi file : folder.list()){
                     if(file.name().startsWith("bundle") && file.extension().equals("properties")){
                         String name = file.nameWithoutExtension();
-                        bundles.getOr(name, Array::new).add(file);
+                        bundles.get(name, Array::new).add(file);
                     }
                 }
             }
@@ -357,7 +357,7 @@ public class Mods implements Loadable{
         while(bundle != null){
             String str = bundle.getLocale().toString();
             String locale = "bundle" + (str.isEmpty() ? "" : "_" + str);
-            for(Fi file : bundles.getOr(locale, Array::new)){
+            for(Fi file : bundles.get(locale, Array::new)){
                 try{
                     PropertiesUtils.load(bundle.getProperties(), file.reader());
                 }catch(Throwable e){
diff --git a/core/src/mindustry/ui/dialogs/MapsDialog.java b/core/src/mindustry/ui/dialogs/MapsDialog.java
index 07b7bc5ce7..5a2f4aab34 100644
--- a/core/src/mindustry/ui/dialogs/MapsDialog.java
+++ b/core/src/mindustry/ui/dialogs/MapsDialog.java
@@ -80,7 +80,7 @@ public class MapsDialog extends BaseDialog{
 
 
                         //when you attempt to import a save, it will have no name, so generate one
-                        String name = map.tags.getOr("name", () -> {
+                        String name = map.tags.get("name", () -> {
                             String result = "unknown";
                             int number = 0;
                             while(maps.byName(result + number++) != null);
diff --git a/core/src/mindustry/world/meta/BlockStats.java b/core/src/mindustry/world/meta/BlockStats.java
index de7ac8d5b7..905d656b05 100644
--- a/core/src/mindustry/world/meta/BlockStats.java
+++ b/core/src/mindustry/world/meta/BlockStats.java
@@ -55,7 +55,7 @@ public class BlockStats{
             map.put(stat.category, new OrderedMap<>());
         }
 
-        map.get(stat.category).getOr(stat, Array::new).add(value);
+        map.get(stat.category).get(stat, Array::new).add(value);
 
         dirty = true;
     }
diff --git a/desktop/src/mindustry/desktop/steam/SWorkshop.java b/desktop/src/mindustry/desktop/steam/SWorkshop.java
index 5acd588f6d..9f064db597 100644
--- a/desktop/src/mindustry/desktop/steam/SWorkshop.java
+++ b/desktop/src/mindustry/desktop/steam/SWorkshop.java
@@ -51,7 +51,7 @@ public class SWorkshop implements SteamUGCCallback{
     }
 
     public Array<Fi> getWorkshopFiles(Class<? extends Publishable> type){
-        return workshopFiles.getOr(type, () -> new Array<>(0));
+        return workshopFiles.get(type, () -> new Array<>(0));
     }
 
     /** Publish a new item and submit an update for it.