We need to let you know that Apocalypse alpha 5 is under development adding many new things to the game like locked chests that you need to play mini game lockpick game to unlock them for a high chance of better loot, and more new things coming soon we will release the update of alpha 5 as soon as we finish it  

https://rkgames953.itch.io/apocalypse-999/devlog/536192/apocalypse-alpha-5-is-in...