ProtoGalaxy

Minimalist

Turret Defense: Beat all boss types without upgrading (single or multiplayer).

Uneasy Defender

Turret Defense: Lose 200% health on the planet (single or multiplayer).

Formidable Defense

Turret Defense: Have 40 turrets in play (single or multiplayer).

Pawn Shop

Turret Defense: Sell 20 turrets (single or multiplayer).

Imminent Death

Turret Defense: Have all boss types in play (single or multiplayer).

Turret Admiral

Turret Defense: Get to round 13 (single or multiplayer).

Stealthy

Complete the Security Zone mission without taking more than 25% damage (single player, normal difficulty or harder).

Puzzling

Complete the Factory mission without using the gravity beam on anything other than keys (single player, normal difficulty or harder).

Ecologist

Complete the Substructure mission without destroying any enemies (single player, normal difficulty or harder).

Hero

Complete ProtoForce: Alpha Op on Hard difficulty (single or multiplayer).

Exterminator

Destroy all Pearl and Spider enemies in the Front Line mission (single player, normal difficulty or harder).

Big Saver

Turret Defense: Have 750 money on hand (single or multiplayer).

Search Light

Complete the Derelict mission without revisiting any room (single player, normal difficulty or harder).

Stunt Pilot

Fly through all markers in the Battle Ship mission (single player, normal difficulty or harder).

Arcade Master

Complete the Barricades mission without looking back (single player, normal difficulty or harder).

Guardian

Complete the Assault mission while keeping Earth's shield above 70% (single player, normal difficulty or harder).

Strategist

Complete the Black Hole mission using only the gravity beam (single player, normal difficulty or harder).

Collateral Damage

Use the moving Proton Cannon to destroy 20 enemies (single player, normal difficulty or harder).

Warp Speed

Complete the Power Plant mission in under 5 minutes (single player, normal difficulty or harder).

Technician

Collect all blueprints (single or multiplayer, any difficulty).

Star Gazer

Create a mine constellation in the Fort (single player, normal difficulty or harder).

Secret

Energized

Complete the Reactor mission without using any battery (single player, normal difficulty or harder).

Annihilator

Destroy 500 enemies in the Credits mission (single player, normal difficulty or harder).

Key Bearer

Use the copper key to open the lock in the Scrap Yard (single player, normal difficulty or harder).

Sentinel

Complete the Rally Point mission without moving (single player, normal difficulty or harder).

Demolitions Expert

Defeat the Mind without hitting any levers in the boss room (single player, normal difficulty or harder).

Turret Commander

Turret Defense: Get to round 5 (single or multiplayer).

Rainy Day

Collect 7500 money (single or multiplayer, any difficulty).

Recruit

Complete ProtoForce: Alpha Op on Easy difficulty (single or multiplayer).

Veteran

Complete ProtoForce: Alpha Op on Normal difficulty (single or multiplayer).

Galaxy Forger

Create a new map in the editor.

Pilot License

Complete the tutorial (single player, normal difficulty or harder).