Love the game! One suggestion though - could you make the quick saves last when you turn off the game? (so you can resume when you turn it back on). It's an incredibly hard game, so completing a whole level sometimes takes hours and if you turn it off then you lose all your progress.
Also, I got killed while in the infernal gate and accidentally pressed "X" on the controller at the game over screen, which wiped all my progress sent me right back to the start of the Boneyard. It might be a good idea to disable the X button for the game over screen menu so it doesn't happen to anyone else. Cheers! :)