I really enjoyed this entry until it became too frustrating to continue :P
I am a huge fan of puzzle games and cryptic puzzles are a classic trope in dungeon crawlers. However, the game did make me feel a bit dumb. I couldn’t figure out what all the differences were and the game didn’t seem to lend any help aside from the vague mention that there is something different. Perhaps a clear example of each difference somewhere in each room to really show how things can be different. For example, you did a great job with the lights. Maybe when the player passes through a second time it might say, “Hmmm… these rocks seem bigger than before” or “Did the lights always shine like this?”
It is obvious a lot of effort went into this game and I’m sad I didn’t get to fight the boss at the end. That said, I did have fun drawing out the map and trying to find the differences! Thanks for making it :D
Here is a video of my playthrough: https://www.twitch.tv/videos/2109694847?t=02h46m00s