Beat 'em up, then beat 'em up some more, and then - tell some jokes?
The Witcher 3: Blood and Wine - Fists of Fury: Toussaint
Pick this quest up from notice boards in the city of Beauclair. Unlike the Wild Hunt equivalents, this Fists of Fury quest can be knocked over in a few minutes, as all the champions are found within a few hundred metres of each other in Beauclair.
Stillwaters is found fairly close to the merchant south of The Gran’Place. This isn’t an easy fight, as Stillwaters attacks aggressively and will batter you into a stagger fairly easily if you don’t dodge the strong attacks. Your best bet against this powerful opponent is to use timed parries to cause stagger – raise your guard just as you’re about to be hit, rather than just holding it in, and make a few quick jabs before guarding again. Do get your guard up the moment the fight starts, though, or it may be over too soon for any such strategising.
Mancomb is found near the Nilfgaardian Embassy marker in south Beauclair. This one’s a bit different though; you can win the battle just by out-taunting Mancomb after chatting with the bookie. First, insult his mother. Then, tell him you’re afraid you’ll kill him with one blow. Finally, tell him he should have quit before this started. He’ll retire in discomfiture.
The closest marker to Colossus is Cooper’s Gate; head north up the road to the east of the marked building to find stairs leading to a raised area with an arena. Colossus challenges Geralt to deflect just three blows so if you’re good at parries give it a go. It’s not easy, as Colossus really is very quick and hits hard, but if you just mash guard as soon as he moves you’ll manage it. After one parry, wait for his stagger animation to end and slam your guard back up. If you miss the parry release the guard button and slam it again.
Defeat all three champions in any order to unlock the next quest in this chain.