Kill 40 Bullseye tagged enemies

Kill the Brawler in Haven without taking any damage

Detonate multiple Magnum rounds to kill 2+ enemies at once, 5 times

Collect all journals

Defeat the Widowmaker in Times Square without killing a single Hybrid

Score a basket by lobbing a grenade through a basketball hoop

Freeze 5 enemies at once and destroy them with a blast of the Cryogun's secondary fire

Use the Atomizer secondary fire to kill 30 enemies

Make Santa and his reindeer fly

Purchase all available weapons.

Reach the ending movie.

Kill 13 zombie dogs (lifetime)

Purchase 15 weapons.