IsaakWells

Reach out Find the seventh missing piece

Fast Break Score at least 2 Dunks in the first minute of a Hoops game

Debugger Repair the brain

Rescuer Rescue the girl

Escaper Escape Machinarium

Streets Sweeper Unlocked after the player discovers all collectibles in Act I.

Skilled Treasure Collector Find 50 Treasures

Serve the servant Beat 20 robot enemies

Mitko Vasilev Defeat Diamond Block league boss Mitko Vasilev

Leave No Gem Unturned Earn 21 Gems.

The Cinema Clear out the cinema

Henderson Town Reach Henderson

Cut Your Teeth You were successfully promoted up a rank in multiplayer.

Snake in the Grass Take out a Japanese soldier lying in wait in the grass.

Hard Hitter Complete the campaign on Hardened difficulty.

One of the Many Defeat the ultimate evil within.

Symmetry Activate the Symmetry laser.

VS Zed Win Win a VS Survival Match playing as the Zeds

Biotics Bling Collect all the items on Biotics Lab

Siege Hammer Install a total of 5 barricades during hub defense

Combo Beginner Achieved 20 consecutive hits with the Combo Meter equipped

Catacombs Cash Collect all the items on Catacombs

Son of Medici Complete Story Mission: Son of Medici.

Ruthless Make 50 total Shots on Goal using Merc, Grog, or Ripper

Challenge Accepted Complete the first rank of all non-level-specific challenges with a single character.

First Step into Darkness Complete the game on Casual difficulty.

Outlander Arrive on Solstheim

Knack Beginner Completed all chapters on Normal difficulty or higher

Outpost Offerings Collect all the items on Outpost

The Handler Complete level 'The Handler'

Armor Spider's Trophy Slayer of Demon “Armor Spider”

Brainteaser Rescue the fifth hostage from Riddler

Expensive Taste Used the Grinder to create a Legendary item.

Diggin' in the crates Find 11 treasure chests in the darkness of the Tombs

Companion Finish the game with the same partner for the majority of the journey and return to the beginning.

Zurkon the Legend Kill 100 enemies with Mr. Zurkon out.

Cold but warm Find the eighth missing piece

Flying Ace Shoot down 10 enemies with machine guns in "Throttle."

Digitize Me! Digitized into Claptrap's Brain.

Impossible Trinity You completed the mission "Museum Piece".

Lots of Zeros Sonic Spinball: Get 10,000,000 points in the first level

Rising Threat Complete Rising Threat.

YOLO Among Thieves Beat the Last Chapter Without Dying on Normal Difficulty or Harder

Hedge-hopper On the level FRONTLINE kill all of the enemy Red Army and Fascist Soldiers.

Tower Up Golden Axe II: Complete Tower Level

Restricted Airspace EMP 10 enemy aircraft out of the sky with the hovertank in "Bio Lab."

Skilled Upgrade any ability once in single-player mode.

Entry Level Electrician I should get this whole generator panel running just in case. (Ch. 14)

Master Grenadier Kill three enemies with one grenade

Complete Chaos Sonic The Hedgehog: Obtain a Chaos Emerald