Hello! Thank you for playing this game. Maybe it was really bug, but at last version the exit key dropped below player, and you could hear the key-dropping sound. But I listened to you and now exit key drops in front of the player, and when it will touches the floor - you can hear a ringing sound. I also added hint when you use the cupboard key on the enemy your hint will be changed to "I already opened it. It is empty" or something like this. Thank you for helping with developing this game. We apperciate your attention :)