Clear Rooftop & kill 40 or more enemies without getting hit 5 times on highest difficulty [Level skip allowed, body armor prevents hit, fall damage counts as a hit]
Clear Submuseum & kill 45 or more without getting hit 10 times on highest difficulty [Level skip allowed, body armor prevents hit, fall damage counts as a hit]
Take no hit during the gun fight against Phoenix in Cryo Prison after dealing with the crane on Crazed or Total Demolition (The Crane has to be avoided when it is stomping, resets on death)
Clear Parking Structure & kill 65 or more enemies without getting hit 12 times on highest difficulty [Level skip allowed, body armor prevents hit, fall damage counts as a hit]
Clear Cryo Prison & kill 60 or more enemies without getting hit 12 times on highest difficulty [Level skip allowed, body armor prevents hit, fall damage counts as a hit]
Clear Monorail & kill 33 or more enemies without getting hit 8 times on highest difficulty [Level skip allowed, body armor prevents hit, fall damage counts as a hit]
Clear Pipe Maze & kill 60 or more enemies without getting hit 15 times on highest difficulty [Level skip allowed, body armor prevents hit, fall damage counts as a hit]
Clear Wasteland & kill 75 or more enemies without getting hit 14 times on highest difficulty [Level skip allowed, body armor prevents hit, fall damage counts as a hit]
Clear Zipline & kill 85 or more enemies without getting hit 17 times on highest difficulty [Level skip allowed, body armor prevents hit, fall damage counts as a hit]
While using the zipline at the Rooftop stage, kill up to 5 enemies by holding the stand shoot button (X) in a up right diagonal direction [DO NOT USE THE BRAKES!]