Minor changes to menu controls

src/battle-scene.ts

@@ -904,7 +904,9 @@ export default class BattleScene extends Phaser.Scene {
 				case Mode.GAME_MODE_SELECT:
 					this.ui.setOverlayMode(Mode.MENU);
 					break;
+				case Mode.MENU:
 				case Mode.SETTINGS:
+				case Mode.ACHIEVEMENTS:
 					this.ui.revertMode();
 					this.playSound('select');
 					break;

src/ui/ui.ts

@@ -53,11 +53,6 @@ const noTransitionModes = [
   Mode.SETTINGS
 ];
 
-const menuModes = [
-  Mode.MENU,
-  Mode.SETTINGS
-];
-
 export default class UI extends Phaser.GameObjects.Container {
   private mode: Mode;
   private modeChain: Mode[];