Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

0wn3d (15 points): Score 5 takedowns in a row without getting taken down yourself.
Airman (5 points): Complete 25% of all story missions.
Airman First Class (10 points): Complete 50% of all story missions.
Big Trouble In Little City (10 points): Complete story mission 'Death From Above'.
Chief Master Sergeant (40 points): Earn a silver medal in 100% of all story missions.
Collossi Or Colossuses? (20 points): Complete story mission 'All Rhodes Lead To Morcubus'.
Condor (30 points): Outfit a plane with all level 3 parts in story mode.
Customizer (25 points): Unlock all customization parts in story mode.
Dodgy (15 points): Dodge a total of 500 missiles.
Explosive Device Master (15 points): Earn 25 takedowns from damage caused by destroying explosive breakables.
F-Beam Master (15 points): Earn 50 takedowns using the 'F-Beam' powerup.
General (75 points): Earn a gold medal in 75% of all story missions.
General Of The SkyHeroes (100 points): Earn a gold medal in 100% of all story missions.
Hawk (20 points): Outfit a plane with all level 2 parts in story mode.
I AM Big, The Planes Got Small (30 points): Complete story mission 'Mega Shark VS...YOU!'.
I Feel The Need For Speed! (15 points): Spend 10 minutes at super boost speed.
I Got ALL The Weapons I Need (20 points): All at once, have active 'Shield', 'Twin Options', and 'F-Beam' powerups.
I'm Fine, But Dizzy (15 points): Spend 20 minutes power turning.
If You Build It, You Can Play It (10 points): Assemble 5 planes in story mode where all parts are from the same aircraft type.
It's My First - Dogfight (20 points): Earn a 1st place finish in a dogfight.
It's My First - Race (20 points): Earn a 1st place finish in a race.
Lemming Award (10 points): Crash your plane.
Lieutenant General (50 points): Earn a gold medal in 50% of all story missions.
Machine Gunner (15 points): Earn 50 takedowns using the 'Machine Gun' main weapon.
Major General (25 points): Earn a gold medal in 25% of all story missions.
Master Sergeant (20 points): Earn a silver medal in 50% of all story missions.
Mines Master (15 points): Earn 50 takedowns using the 'Mines' powerup.
Missile Man (15 points): Earn 50 takedowns using the 'Missile' main weapon.
Multi-Missile Master (15 points): Earn 50 takedowns using the 'Multi-Missile' powerup.
Orbital Strike Master (15 points): Earn 50 takedowns using the 'Orbital Strike' powerup.
Property Damage (15 points): Destroy a total of 1000 breakables.
Ragnarok - OFFLINE (15 points): Complete story mission 'Rock The Ragnarok'.
Resilient (15 points): Go from being below 10% health to 100% health without getting taken down.
Senior Airman (15 points): Complete 75% of all story missions.
Senior Master Sergeant (30 points): Earn a silver medal in 75% of all story missions.
Shaken AND Stirred (25 points): Complete story mission 'All Your Base...'.
Shotgun Master (15 points): Earn 50 takedowns using the 'Shotgun' powerup.
Sparrow (10 points): Complete the tutorial in story mode.
Speedy Takedowns (15 points): Takedown 3 players in 10 seconds or less.
Staff Sergeant (20 points): Complete 100% of all story missions.
Stunt(ed points) Growth (15 points): Perform a total of 500 air stunts.
Supernova Defense Master (15 points): Destroy 50 locked-on missiles using the 'Supernova' powerup.
Supernova Master (15 points): Earn 50 takedowns using the 'Supernova' powerup.
Takedown Master (15 points): Score at least 12 takedowns in a single dogfight.
Technical Sergeant (10 points): Earn a silver medal in 25% of all story missions.
Twin Options Master (15 points): Earn 50 takedowns using the 'Twin Options' powerup.
You Ain't Got Nothin' On Me (15 points): Complete a race or dogfight in 1st, 2nd, or 3rd place without getting taken down once.
You ARE Talented (20 points): Play at least 1 mission with every perk.