Great idea! Like the best games do, this game made me develop a strategy: shoot the enemies as far away from me as possible so their bodies dont get stuck in the middle where I need to move.
The art was also fantastic, haven't seen any game in this style yet.
Although the music is great one thing you should work on is the sound fx. The sound effect that plays when killing an enemy is a bit too loud.
Other than that, good job man!