Complete "The Road to Victory"

Shoot up the copier in the bridge offices

Collect all DP points and ammo in the bathroom

Complete "Death, Baby"

Set the Dialog Volume slider to zero

Choose the patience option all the way through the line in the Carnival

Heh heh, good times

Get a stealth kill with every melee weapon in Sinister’s Lair without being detected

Finish a 4 players Left 4 Ted Match by being the last survivor standing.

Finish first in a 4 players Defluffication Match with a kill limit of 100.

Finish a 4 players Vampiricorn Match with all your lives.

Multiplayer Madness: Finished First in a Multiplayer Match and Shouted: "HAZELNUT!" at the Losers.

Complete "Genosha"