Hi! Very good job on this game! Here's some feedback (good and bad):
The aesthetics are great, love all the blending with the black and white and the portraits on the walls (just need to be careful to not slip off the minimalist style). Enemies seems quite harmless, even the boss is very easy to kill. Using the spiders to move to another position is a great touch (considering they are enemies, we can see this as some sort of damage boost). The song is good but it gets annoying really quickly, as it loops a very small track. Jumping seems a little off, as sometimes it doesn't seem to reach the height it's supposed to.
Anyway, good job overall! =]