Divide_by_0

Displacement Complete the Displace mission

The Way of Echelon Complete the Hokkaido mission

Dire consequences Eliminate Milan Nedich

Amy Rose Become friends with Amy.

Expert Matcher Create a match of 24 or more items.

A Better Human Being Recover the Forge Item

Skill Collector - Nero Acquire all of Nero's skills.

Fright of Neighbors Complete the Battery mission

BSOD Shutdown 10 computer terminals

Plight of Neighbors Complete the Seoul mission

Level 2 S Rank Get S Rank on Level 2

Enhanced perception Hack 10 terminals without scanning them

A Dark Doorway Recover the Psi Gate

Cleaning Duty Complete the Bathhouse mission

The Most Dangerous Game Play in a multiplayer match

The Star in the East Complete the Kokubo Shosho mission

Life's Edge Neutralize 20 enemies with the combat knife

Bushido Save and Capture Otomo

Meat Over Metal Kill a Sectopod on the same turn you encounter it (in Single Player)

Pit Lord Kill 100 enemies by knocking them into pits

Killing time Score 25000 on Super Turbo Turkey Puncher 3 in DOOM 3 or RoE

Price of Betrayal Eliminate Douglas Shetland

Old School Beat 10 Warpzones

Cold Duty Sacrifice the Pilots as per order

Big the Cat Become friends with Big.

Slayer Defeat the Boss of the Fifth Chamber

Skill Collector - Dante Acquire all of Dante's skills.

Castle Crasher Clear the First Chamber 50 Times

Sentinel Complete the game in Normal difficulty

Darkside Disable 40 electronics using the OCP

Not Today Free yourself when captured

A Line Crossed Complete the Avatar Autopsy

Level 4 Complete Complete Level 4

Price of Friendship Show mercy to Douglas Shetland

E-102 "γ" Become friends with E-102.

Mechlord Hack a Sectopod

A Final Stand Create the Commander's Avatar

Business Time You unlocked Tim by collecting 50 bandages! He's weird...

Unsung Hero Perform acts of untold heroism in Seoul

Stop Hitting Yourself Kill an enemy with a hacked turret

Going Downer Open the shortcut to the Third Chamber

Sticky Situation Defeat the Vagary boss in DOOM 3

Wrath Of The Raging Demon Hunter Defeat 10 enemies within 1 second.

Immune Complete the game without using medkit

Earth Avenged Overthrow the aliens at any difficulty level

Deadly Pair Clear the game with Lady and Trish.

David and Goliath Kill a Berserker in melee combat

Knock, Knock-out Knock out 5 guards by bashing doors

Bot Buddy Keep a Sentry Bot alive to its destination in DOOM 3, RoE, or Lost Mission (except Mars City)

Devil In A Blue Coat Clear the game with Vergil.