MAJOR SPOILERS: it sucks.
I know what gif you're talking about, but I mean the scene where he's in the weapons lab with the prawn mastermind, and SWAT-types are trying to take them out, and he activates the gun they've been trying to get to work for years and starts shooting these lightning-esque bolts that blow any organic object --such as a SWAT goon-- to smithereens.^ You posted it in the coffee table thread.
MAJOR SPOILERS: it sucks.