Megaloadon

Dead Useful Kill 10 aliens with environmental explosives

Ratcatcher Find all the dead rats in Bedroom in a single play.

Size Matters Use your biggest weapon

Backstabber Kill 20 enemies with melée while they are idle

Big Game Hunter Complete a bounty from each safe house.

She was the last woman here Showed mercy to an imprisoned monster

Arms Dealer Buy all items from the Survival Weapon Armory.

Kill Nil Beat any boss without dying.

Island Queen Complete all objectives in the Plover Island Complex

Promise Kept Complete End of Zoe on Easy or Normal.

Come Here, Little Boy Taunt and defeat five plus angered enemies while taking no damage. Gaze of Despair may be equipped.

Wheely Fast Outran the Wheel in the Temple of Boom.

Taste of the Exotic Craft an exotic weapon or item.

Conqueror of Panau Complete 9 stronghold takeovers.

Brain Pain Train Slain Defeat Locomöbius.

Sightseeing Visit a District

This! Is! Keystone! Kick an enemy into his death

Path of the Prospect Unlock the mighty Calbot move.

Big Tournament Completed each of the larger challenges in all 3 coliseums

Wellness Plan Complete The Well in the Campaign

Naughty Tentacles Destroy all the tentacles that drop down together during a single sequence in Chapter 9.

Perfect Action Completed a stage without taking any damage on Hard difficulty or above

Blade Runner - 75 kills with the knife Kill 75 Helghast using the knife

Amethyst Medal Defeated the Giant Orb using Dark Knack

Timber! Singleplayer: In Rescue the Rescuers, chop down 5 trees with the Minigun

Barrel Roll a Toy Car in the Airfield Awarded for successfully landing a Barrel Roll in the Airfield driving any of the Toy Cars

Helping Hands Revive a Co-op player 20 times

Apex Eater Kill the Atomic Leviathan

The Triple Lindy Complete 3 different high dives in the Foundry

Go breaking my heart Collected 9 Tyrant Hearts

An ode to Rube Goldberg Get 20 chain reaction explosive kills

I Need a Towel Get hit by 10 Pregnator bombs

On the Noggin' Kill 30 aliens with headshots

4.5 seconds of Crash TV Air Time Successfully land the Island Mega jump from the Crash TV Ski Jump and get at least 4.5 seconds of Air Time

It's Starting to Grow on Me Use Rose's mutamycete powers at least 20 times.

Hard as Nails Finish all missions on hard difficulty or above.

Trauma Center Defeat Dr. Benedict.

Make it go boom Kill 20 enemies by shooting explosives

Sunstone Medal Defeated Katrina's Mech using Sunstone Knack

Perfect Timing Complete 100% of the Time Trials

All in Defeat a boss with at least 20000 unspent experience

Lancer Killer Kill a Lancer Big Daddy

Fool of a Tuck Throw a corpse down the bottomless pit in Catacombs

Bouncer Keep Chimeran forces from entering the Brewpub

Piñata Party Kill 5 enemies with the melee attack while they're suspended with the grappling hook.

Complete your first Timed Challenge Awarded when you complete your 1st Timed Challenge.

Furious Fists Exact your vengeance (kill Yang at the end of the Sanctuary).

Full Body Tourettes Get knocked down 10 times

“Worlds of Hurt” – Tough Guy Rescued the Little Sister in “Worlds of Hurt” using only plasmids, tonics, the wrench, and the research camera, on Medium or higher difficulty

Red Wrath and Beyond Defeat Psychoreaver.