In smurf vile leaf you play as 3 dufferent male smurfs

First Hefty
Second Brainy
Third Chef

You use a weapon or tool called the smurfalizer to blow out chemicals to cure infected plant monsters and make them peaceful

Next is the fourth smurf called Smurfette

When she is played the Smurfalizer gets a suction or vacuum upgrade

She has to defeat enemies by sucking things and then launching them at enemies

She is in a swamp that Gargamel complains about being wet and slippery