Purchase all Player Upgrades
Score a combo higher than 40 before they lock the elevators
Complete 'Front Gates of EEEEEEEVIL!' from start to finish without dying
Complete 'Front Gates of EEEEEEEVIL!'
Complete 'The Road to Victory'
Complete the Breach in 10 seconds
Beat 'Death, Baby' while wearing the pirate hat
Complete 'Death, Baby'
Get a high score at the Carnival
Choose the patience option all the way through the line in the Carnival
Collect 100 tacos
Complete 'Landed in Prison'
Heh heh, good times
Stealth Kill Sinister, in the Prison, with the Sword!
Interact with all the ladies at the Shower Surprise Party room
Complete 'Genosha'
Play WTF is Cable
Complete 'Taking a Chance'
Complete 'Job One'
Make a thousand pancakes
Be pretty
Get off your well-toned bottom
Playing with Deadpool's junk
Get from the studio lobby to the boardroom without dying in 5 minutes
Take no damage on the waterslide
Defeat Arclight while taking no damage from her slam attacks
Use all three switches, defeat the two phasers, and chase after Vertigo within 60 seconds
Slap Wolverine a bunch of times
Shoot everything from the Wheel of Insanity (Balloons and the Cow)
Kill 4 enemies in the Tower Plaza with stealth kills
Get through Toxic River without falling into or touching the water and taking damage
Get a stealth kill with every melee weapon in Sinister's Lair without being detected
Find 11 treasure chests in the darkness of the Tombs
Collect all DP points and ammo in the bathroom
Shoot up the copier in the bridge offices
Make it across the floating debris without falling
Score a combo of 75 or more while fighting up the stairs at the 'Front Gates of EEEEEEEVIL!'
Die 10 times in a row through the floating stairs
Complete 'Front Gates of EEEEEEEVIL!' from start to finish using only swords and pistols
Complete the game on Veteran difficulty
Complete the game on Ultra-Violence! difficulty
Complete 'Landed in Prison' without countering any attacks
In 'Genosha' reach the Fan Girl using only Hammers and Plasma Rifles
Set the Dialog Volume slider to zero
Complete five Gold Challenges
Complete a Gold- or Silver-tier Challenge while countering at least 25 times
Combo an entire wave on any Gold-tier Challenge map
Kill a total of 15 enemies by holding cooked grenades
Upgrade all weapons to max
Bank a 300-hit combo
Pass the toilet paper to the scientist in need.
Perform surgical caffeine extraction from 20 machines.
Kill 10 Airborne Headcrabs using the Shotgun.
Kill 20 enemies with the Hivehand.
Ruin the microwave casserole.
Kill an Assassin with the .357 Magnum.
Kill 10 enemies with a reprogrammed Sentry.
Conduct all of the questionable research experiments.
Kill 10 enemies with Snarks.
Headshot 20 enemies with the .357 magnum.
Drown in Lambda Core's coolant.
Kill a Headcrab using fire.
Kill a Marine with their own grenade.
Kill 5 enemies with one grenade.
Kill an Icthyosaur with either the Tau or Gluon.
Use the alternate path in Office Complex.
Use an entire clip of Gluon ammo in one continuous shot.
Get overtaken by a Headcrab's ample anterior.
Interfere with the alarm and laptop in Anomalous Materials.
Overcharge it anyway.
Send the Hidden Hat to Xen.
Kill a Barnacle with a Satchel.
Refuse to insert the specimen into the Anti-Mass Spectrometer.
Help the Barnacle and Headcrab find true love.
Get killed by your own Snarks.
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