Solid idea, it's refreshing to see a tower defense game mixed with dungeon crawling. Perhaps you're the first to do that. Apart from lack of crucial info such as the way to obtain the power ups and a minor bugs such as the screen doesn't follow the character (noticeably in the mushroom's room) I thought this would be an easy game but it was chaotic for me in a good way when the enemies entered my place! It's hard to obtain the powerups and having the chance to use all the towers though, this is due to hitboxes and how much attack/damage is received/sent between player and the enemy ai. This can be fixed easily I believe. Adding more abilities to our character for emergency such as area damage would be a nice addition. Finally, that devil chick at the end is 'hot' af. lol. Above all, this is some well thought design, great job!