Fun game. Interesting idea, though it's a bit of confusing at first. The gameplay is good, though if you press "E" once it'll continue going even if you let go. Bomb timer is a bit too long, maybe have the bombs appear by themselves. (I don't see why the briefcases are necessary?)
Really needs SFX and more polish. Are you thinking about updating it? I love the art, though that also could be improved. Really just implement SFX and a Lose/Win State.
Overall, nice game, just needs polish and SFX.