Adjusting lighting levels so players can see secrets tucked away in the shadows without losing the game's moody atmosphere. Important Note on Safety
Fixing "soft-locks" where a player might get stuck behind geometry or trigger an event out of order.
Making it clearer which doors require which keys (the classic "Skull Keys" or "Jeweled Keys").
, ensuring that your progress isn't lost when the game logic is tweaked. 2. Gameplay Balancing and "Metroidvania" Flow