Unlock Colossus by completing the eighth Story mode mission "Juggernauts and Crosses" then defeat the sentinel outside the X-Men Mansion. Note: Consider using Iron Man and Thor for sentinel fights. You can then purchase Colossus for 150,000 studs at the character store. Select Colossus and Wolverine. Play as Colossus, walk up to Wolverine, then use the default attack to throw him.