It was a platform game I played when I was a kid.
It's a platform game. In the game, you vacuum your enemies (and store them in a backpack which i recall becomes bigger the more enemies you gather). You can eliminate the enemies on the map by either vacuuming them or by shooting them with the vacuumed enemy. What you do is vacuum the enemies and then unload the batch of enemies you gathered. So you unload ALL the enemies you gathered back on other enemies, killing them. I believe it can be played with 2 players simultaneously. Any ideas?