Very good demo, big fan of it so far. I would give reccomendations but it'd be mostly repeats of what others have said so far in regards to things like Tension being a bit odd and slime tiles being weak
The only content suggestions I would make are the funny twin wyrms to go all the way and have one vore the protag for the gameover, would be kinda funny
Outside of that though, very good, looking forward to more content, and have a good day