I liked it a lot. The feel of vacuming the enemy bullets is awesome, I really liked that once I figured that out. It kept me playing until I won in about 5 minutes or so, and that's very nice for a game jam. We don't want to be too long playing the same game.
I wish the character moved a little bit slower. And also, that it didn't get slow when firing. It makes sense to get slow vaccuming, but firing should still be fast.
I loved the story of the game, but it's a shame that it isn't in the game itself. Maybe you could put it in dialogue. But it's a great game! Very fun
Oh, and one more thing. It looks like you are brazilian. In this case, mandou bem demais! Curti demais teu jogo kkkkk