HOLY MOLY I love the stylized graphics & just the general vibe of the game, massive Pizza Tower vibes XD!
But yeah I do have to agree, a few of the keys were not obvious, I had to check the comments in order to progress through the first door.
Also the game did crash on me once, i attacked a square-ish looking boulder thing with eyes on the first branching door levels
Here's the crash log:
############################################################################################
ERROR in
action number 1
of Step Event0
for object obj_player:
Variable <unknown_object>.hsp(100048, -2147483648) not set before reading it.
at gml_Object_obj_player_Step_0
############################################################################################
gml_Object_obj_player_Step_0 (line -1)
Overall it's a very solid foundation, please continue this!