No revenue estimate for XBOX — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $6.3K — a different platform, not this one.

GladMort

As in old arcade games, you can only be hit twice before losing a life. The first time, you lose your armor, but you can continue to fight the forces of evil in UNDIES! Get hit again, however, and you'll lose your life miserably. Losing a life takes you back to the beginning of the level, or to the ... checkpoint if you've reached it. Beware of "Game Over"...