Each time you defeat an enemy the maze arrows change a bit, and that enemy can be locked out.
But that enemy is optional and won't make any difference defeating him or not.
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Thanks for the reply. I figured it our eventually and restarted the chapter from an earlier save lol.
The game was fun and I enjoyed it a lot! A small suggestion here: the main storyline by far feels pretty linear, and there isn't much to do other than matching NPCs together. I think maybe you could add, say, some RNG events throughout the game to spice it up? For instance, having Dave and Zane show up at dorm bathroom together by chance and let players read some flavor texts about their business ;)
Also I hope there could be more bottom enemies / bosses, or maybe like how it is with the upgraded gold demon boss, let players have it both ways :D