diff --git a/src/main/java/de/towerdefence/server/game/GameSession.java b/src/main/java/de/towerdefence/server/game/GameSession.java
index a31e6ad..bcc7cfe 100644
--- a/src/main/java/de/towerdefence/server/game/GameSession.java
+++ b/src/main/java/de/towerdefence/server/game/GameSession.java
@@ -118,11 +118,11 @@ public class GameSession {
         return changedEnemies;
     }
 
-    public void placeTower(Tower tower, int x, int y) throws InvalidPlacementException {
-        if (x < 0 || y < 0 || x + 1 > MAP_SIZE.x || y + 1 > MAP_SIZE.y) {
+    public void placeTower(Tower tower, Vector2i pos) throws InvalidPlacementException {
+        if (pos.x < 0 || pos.y < 0 || pos.x + 1 > MAP_SIZE.x || pos.y + 1 > MAP_SIZE.y) {
             throw new InvalidPlacementException(InvalidPlacementReason.OUT_OF_BOUNDS);
         }
-        if (towers[x][y] != null) {
+        if (towers[pos.x][pos.y] != null) {
             throw new InvalidPlacementException(InvalidPlacementReason.LOCATION_USED);
         }
         if (money < Tower.COST) {
@@ -133,9 +133,8 @@ public class GameSession {
 
         money -= Tower.COST;
         moneyCallback.call(player, money);
-        tower.x = x;
-        tower.y = y;
-        towers[x][y] = tower;
+        tower.pos = pos;
+        towers[pos.x][pos.y] = tower;
     }
 
     public void addMoney(int amount) {
diff --git a/src/main/java/de/towerdefence/server/game/Tower.java b/src/main/java/de/towerdefence/server/game/Tower.java
index a4a9f64..4c30055 100644
--- a/src/main/java/de/towerdefence/server/game/Tower.java
+++ b/src/main/java/de/towerdefence/server/game/Tower.java
@@ -1,12 +1,13 @@
 package de.towerdefence.server.game;
 
+import org.joml.Vector2i;
+
 import lombok.Getter;
 
 @Getter
 public class Tower {
     public static final int COST = 20;
-    protected int x;
-    protected int y;
+    protected Vector2i pos;
 
     public Tower() {
     }
diff --git a/src/main/java/de/towerdefence/server/game/pathfinding/PathNode.java b/src/main/java/de/towerdefence/server/game/pathfinding/PathNode.java
index 76893c0..f7e951d 100644
--- a/src/main/java/de/towerdefence/server/game/pathfinding/PathNode.java
+++ b/src/main/java/de/towerdefence/server/game/pathfinding/PathNode.java
@@ -6,7 +6,7 @@ import lombok.AllArgsConstructor;
 
 @AllArgsConstructor
 final class PathNode {
-    protected final Vector2i pos;
-    protected final long cost; // This is the cost to this Node
-    protected final long estimate; // This is the estimated remaining cost to the Target
+    final Vector2i pos;
+    final long cost; // This is the cost to this Node
+    final long estimate; // This is the estimated remaining cost to the Target
 }
diff --git a/src/main/java/de/towerdefence/server/match/MatchService.java b/src/main/java/de/towerdefence/server/match/MatchService.java
index 63729e7..ba28895 100644
--- a/src/main/java/de/towerdefence/server/match/MatchService.java
+++ b/src/main/java/de/towerdefence/server/match/MatchService.java
@@ -5,6 +5,8 @@ import de.towerdefence.server.game.callbacks.PlayerMoneyCallback;
 import de.towerdefence.server.game.exeptions.InvalidPlacementException;
 import de.towerdefence.server.game.exeptions.InvalidPlacementReason;
 import de.towerdefence.server.player.Player;
+
+import org.joml.Vector2i;
 import org.springframework.stereotype.Service;
 
 import java.util.HashMap;
@@ -51,7 +53,7 @@ public class MatchService {
         if (opponent.isEmpty()) {
             throw new NotInMatchException();
         }
-        playerSession.get().placeTower(new Tower(), x, y);
+        playerSession.get().placeTower(new Tower(), new Vector2i(x, y));
         return opponent.get();
     }
 
diff --git a/src/main/java/de/towerdefence/server/server/channels/match/MatchWebsocketHandler.java b/src/main/java/de/towerdefence/server/server/channels/match/MatchWebsocketHandler.java
index 866b332..9a559ba 100644
--- a/src/main/java/de/towerdefence/server/server/channels/match/MatchWebsocketHandler.java
+++ b/src/main/java/de/towerdefence/server/server/channels/match/MatchWebsocketHandler.java
@@ -17,6 +17,7 @@ import de.towerdefence.server.match.MatchService;
 import de.towerdefence.server.match.NotInMatchException;
 import de.towerdefence.server.player.Player;
 import de.towerdefence.server.server.JsonWebsocketHandler;
+import de.towerdefence.server.server.channels.match.enemy.EnemyUpdateMessage;
 import de.towerdefence.server.server.channels.match.hitpoints.PlayerHitpointsMessage;
 import de.towerdefence.server.server.channels.match.money.PlayerMoneyMessage;
 import de.towerdefence.server.server.channels.match.placing.GamePlayerMap;
@@ -45,7 +46,7 @@ public class MatchWebsocketHandler extends JsonWebsocketHandler {
                 sessionPlayers.get(session),
                 this::onPlayerMoneyChanged,
                 this::onPlayerHitpointsChanged,
-            	this::onEnemiesChanged
+                this::onEnemiesChanged
         );
     }
 
@@ -73,7 +74,11 @@ public class MatchWebsocketHandler extends JsonWebsocketHandler {
     }
 
     private void onEnemiesChanged(Player player, Enemy[] newEnemies, Enemy[] changedEnemies) {
-
+        WebSocketSession session = playerSessions.get(player);
+        try {
+            new EnemyUpdateMessage(newEnemies, changedEnemies).send(session);
+        }catch(IOException ignored){
+        }
     }
 
     @Override
diff --git a/src/main/java/de/towerdefence/server/server/channels/match/enemy/EnemyUpdateMessage.java b/src/main/java/de/towerdefence/server/server/channels/match/enemy/EnemyUpdateMessage.java
index c83c359..909e4f7 100644
--- a/src/main/java/de/towerdefence/server/server/channels/match/enemy/EnemyUpdateMessage.java
+++ b/src/main/java/de/towerdefence/server/server/channels/match/enemy/EnemyUpdateMessage.java
@@ -12,8 +12,6 @@ import lombok.AllArgsConstructor;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
-import java.util.stream.Collector;
-import java.util.stream.Collectors;
 
 @AllArgsConstructor
 public class EnemyUpdateMessage extends JsonMessage {
@@ -34,8 +32,8 @@ public class EnemyUpdateMessage extends JsonMessage {
                 .map((Enemy enemy) -> {
                     ObjectNode o = factory.objectNode();
                     o.set("id", factory.numberNode(enemy.getId()));
-                    o.set("x", factory.numberNode(enemy.getX()));
-                    o.set("y", factory.numberNode(enemy.getY()));
+                    o.set("x", factory.numberNode(enemy.getPos().x));
+                    o.set("y", factory.numberNode(enemy.getPos().y));
                     return o;
                 })
                 .map(JsonNode.class::cast)
@@ -46,8 +44,8 @@ public class EnemyUpdateMessage extends JsonMessage {
                 .map((Enemy enemy) -> {
                     ObjectNode o = factory.objectNode();
                     o.set("id", factory.numberNode(enemy.getId()));
-                    o.set("x", factory.numberNode(enemy.getX()));
-                    o.set("y", factory.numberNode(enemy.getY()));
+                    o.set("x", factory.numberNode(enemy.getPos().x));
+                    o.set("y", factory.numberNode(enemy.getPos().y));
                     return o;
                 })
                 .map(JsonNode.class::cast)
diff --git a/src/main/resources/spotbugs-exclude.xml b/src/main/resources/spotbugs-exclude.xml
index d737fbf..d3a00dc 100644
--- a/src/main/resources/spotbugs-exclude.xml
+++ b/src/main/resources/spotbugs-exclude.xml
@@ -25,4 +25,10 @@
         <Method name="placeTower"/>
         <Bug code="L,B,ISC"/>
     </Match>
+    <Match>
+        <!-- This will be used soon -->
+        <Class name="de.towerdefence.server.game.GameSession"/>
+        <Field name="hitpointsCallback"/>
+        <Bug code="L,P,UrF"/>
+    </Match>
 </FindBugsFilter>