Great pixel art, the player walking up could be a bit more expanded however. Not a bad idea for the games concept as well. However the movement and the attacking feel rather clunky. The traps effecting the monsters and the player is a nice touch however. The enemy ai is a bit glitchy and rather simple however. Also I don't know if the boss can also be effected by the traps but in my play it didn't seem like that was the case. The random floor generation is quite nice though, but can sometimes result in a row of characters that need stuff.
I played the browser submission for clarity.