Fixes — Undershadows Steam update #1362068

Fixes a bug that caused clicks to stop working properly. Fixes the issue with the switches — they should now save as expected again, even after leaving the game. You'll be asked for your character once upon loading. This question won't appear again. The reason turned out to be that I had integrated the checkpoints into the options menu, which somehow broke the structure. For now, checkpoints will remain permanently enabled. I'll create a dedicated options menu for them on the desktop screen at a later time.