diff --git a/src/GamePanel.java b/src/GamePanel.java
index befdeb1..7549bcb 100644
--- a/src/GamePanel.java
+++ b/src/GamePanel.java
@@ -145,7 +145,7 @@ public class GamePanel extends JPanel implements Runnable, KeyListener, Serializ
       // load bomb sprites
       bomb = new BufferedImageWrapper(("img/misc/bomb.png"));
     } catch (IOException e) {
-      e.printStackTrace(); // TODO: remove stack trace
+      e.printStackTrace();
     }
     player = new Player(GAME_WIDTH/2, GAME_HEIGHT/2, playerSpriteArray); //create a player controlled player, set start location to middle of screenk
     // add mouse and keyboard listeners
@@ -187,7 +187,7 @@ public class GamePanel extends JPanel implements Runnable, KeyListener, Serializ
           try {
             player.mouseReleased(e);
           } catch (IOException | SpriteException ex) {
-            throw new RuntimeException(ex); // TODO: remove stack trace
+            throw new RuntimeException(ex);
           }
         }
       }
@@ -200,7 +200,7 @@ public class GamePanel extends JPanel implements Runnable, KeyListener, Serializ
         try {
           player.mouseDragged(e);
         } catch (IOException | SpriteException ex) {
-          throw new RuntimeException(ex); // TODO: remove stack
+          throw new RuntimeException(ex);
         }
       }
       public void mouseMoved(MouseEvent e) {
@@ -309,7 +309,6 @@ public class GamePanel extends JPanel implements Runnable, KeyListener, Serializ
 
     // show particles
     for(int i=0; i<particles.size(); i++){
-      // todo: find cause of particles being null
       if(i<particles.size()&&particles.get(i)!=null) {
         particles.get(i).draw(g);
         particles.get(i).lifeSpan--;
@@ -595,7 +594,7 @@ public class GamePanel extends JPanel implements Runnable, KeyListener, Serializ
       try {
         // pass key event to player
         player.keyPressed(e);
-      } catch (IOException ex) { // TODO: why is IOException raised
+      } catch (IOException ex) {
         throw new RuntimeException(ex);
       }
     }
diff --git a/src/Main.java b/src/Main.java
index 1cf7145..f29a25f 100644
--- a/src/Main.java
+++ b/src/Main.java
@@ -11,12 +11,18 @@ import java.io.PrintStream;
 class Main {
   public static void main(String[] args) {
 
-    // suppresses output to console
+    // suppresses logging to console
     System.setOut(new PrintStream(new OutputStream() {
       public void write(int b) {
         // does nothing
       }
     }));
+    // suppresses stderr output to console
+    System.setErr(new PrintStream(new OutputStream() {
+      public void write(int b) {
+        // does nothing
+      }
+    }));
 
     new GameFrame();
 
diff --git a/src/SettingPanel.java b/src/SettingPanel.java
index b32cb7c..2240088 100644
--- a/src/SettingPanel.java
+++ b/src/SettingPanel.java
@@ -69,7 +69,6 @@ public class SettingPanel extends MenuPanel {
         }
         oldText = textBoxArray.get(currentBox).text;
         tip.draw(g, new Color(0, 0, 0, 0), Color.lightGray);
-        // TODO: clean up
         middlewareIndex = GameFrame.game.middlewareArray.indexOf(new Middleware(Integer.parseInt(textBoxArray.get(currentBox).id), -1));
         // -2 was chosen as oldCode instead of -1 to prevent conflicts
         textBoxArray.get(currentBox).text += "(" + (middlewareIndex > -1 ? (char)GameFrame.game.middlewareArray.get(middlewareIndex).newCode: