I really enjoyed playing this! The creature on Floor -24 definitely caught me by surprise, after two deaths I managed to fix the pipes.
Though Floor -32 was bugged for me, as there was text on the top left that said "false" (which soon turned to "true" after I found the floor's creature) 
Loved the crouching mechanic where you had to be silent for the floor's creature instead of just making it like Floor -24's monster where it always knows your location. But soon I realized the monster actually doesn't do damage to you (Another bug), after figuring that out I just finished the rest of the pipes while having it follow me and beat the back of my skull.
My only two small suggestions is to make it so you have to hold [ESC] to return to the main menu and add "press [SHIFT] to sprint" on the top left as well.
Overall loved the creatures' designs and had fun playing this game, hopefully Floor -32 gets fixed and I'll be here for Floor -46!