Great job! Sprites and terrain are solid AF. Enjoyed the grid dropping to change terrain/mobs and the loot system.
Regarding monster types, I was unable to kill the orcs/ogres without taking damage since they have two life. A few times, 3 orcs appeared in a single map/level, which prevented progression (unless I am missing a game mechanic). Assuming this was intended, perhaps the Orcs could be stunned when attacked (skipping their next turn), but all other mobs move/attack as normal.
Lots of potential - could definitely be developed into a full roguelike game. Bravo for such good work in a short window!