Whatever Kills You Only Makes You Stronger(Not Finished, Sorry)

Binding of Isaac clone that is sadly unfinished before the deadline of the gamejam. You also need to play in fullscreen to see the whole game. One of the issues Im having is not being able to hit the boss. I just had normal enemies die on getting hit, and when I tried to implement health for the boss, I ran into trouble and am sadly to busy to fix it before the deadline, so I removed components on the boss and currently you just run into him to beat the game. Also theres no music, its not a bug....