First Walkthrough Gameplay...

Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Ace Pilot	Obtain medals and ribbons in every mission.	100
Antagonist	Shoot the Cloudworm every time it appears in Cloudtop.	25
Archaeologist	Destroy all Walkers before they reach the Temple.	25
Blue Bomber	Destroy ten enemies with a single bomb.	25
Daredevil	Save Thorne and fly through all the Waterfalls in Archipelago.	25
Decorated	Obtain medals in every mission.	100
Distinguished	Obtain ribbons in every mission.	100
Dogfighter	Defeat the Prowlers before the timer expires in Mines.	25
Friendly Fire	Shoot down Chuck, Roe and Thorne during a mission.	25
Geologist	Destroy all Boulders in Canyons.	25
Hot Shot	Obtain a ribbon by achieving a high score on a mission.	50
Into the Wild Blue Yonder	Escape the Ash Cloud after defeating Grimclaw.	75
Left on Read	Ignore Grimclaw's call.	25
Locked and Loaded!	Complete Jill's Training Mode.	25
Meteorologist	Obtain a high score in Hurricane.	25
Mineralogist	Destroy all Crystals in Grotto.	25
Mission Cleared	Destroy Grimclaw's Mech.	75
Mission Complete	Defeat Grimclaw.	75
Now THAT'S Teamwork!	Defeat Grimclaw without any allies falling in a mission.	50
Pacifist	Defeat a Boss without destroying any other enemies.	25
Time For a Little Payback	Watch Chuck defeat Wartle in a dogfight.	25
W-I-L-D	Obtain a medal by collecting W-I-L-D during a mission.	50