It crashes for me as well in the later rooms, for the game play it's self it isn't bad but it definitely needs some improvement. First of all some kind of hit detection on enemies would be nice (knochback flashing red etc.), also some sound effect / music would definitely make the game better as well and controlling the camera with the mouse feels a little bit to sensitive right now. It would probably even a good idea to just lock the camera to the back of the player so you don't have to adjust it yourself. Besides that tough pretty good game and definitely a nice base you can develop further upon.
Viewing post in Monochrome Temple jam comments
Thanks for the feedback! Yeah, I ran out of time so I didn't get to add much juice (hit detection, sfx, music). In future builds, I'll change the controls as well so it always moves with the mouse, and the crosshair is at the center. Also, a lot of people say there are problems in the last room, so I'll have to fix that.