Sorry I hijacked your Bioshock: Infinite thread, but you brought up a game I'm psyched about.
That grenade launcher is using bio grenades, which make a sticky surface that slows enemies down. There are also corrosive, fire, and radioactive grenades/weapons, and maybe others I'm not aware of. Sort of like an open world 3rd person Borderlands in some ways.
Anyway I'll stop promoting Defiance. It's not like I'm being paid.
Edited by MysticStrummer, 29 March 2013 - 08:48 PM.