Galaga Achievements Here is the full list of all 12 Galaga achievements worth 200 gamerscore. It takes around 1-2 hours to unlock all of the achievements on Xbox 360.Filter Achievement View View Image viewList view Sort by TrueAchievement desc TrueAchievement asc Achievement name desc Achievement name asc GamerScore desc GamerScore asc TA Ratio desc TA Ratio asc Gamers desc Gamers asc Xbox.com order Date won desc Date won asc Flag Filter All None 12 Offline Mode 12 Single Player 3 Main Storyline 6 Collectable Link flagsOR joinAND join Achievements without these flags What are achievement flags? Click to find outApply Dual FighterForm a Dual Fighter! 1 guideEnemy FighterShoot down a red captured Fighter! 3 guidesPerfect BonusShoot down all enemies in a Challenging Stage! 5 guidesDragonflyFind the Dragonfly during battle! 1 guideScorpionFind the Scorpion during battle! 1 guideMosquitoFind the Mosquito during battle! 1 guideStingrayFind the Stingray during battle! 1 guideGalbossFind the Galboss during battle! 1 guideBlue SpaceshipFind the Blue Spaceship during battle! 1 guideStage 10Play up to Stage 10! 1 guideStage 20Play up to Stage 20! 2 guidesStage 30Play up to Stage 30! 3 guides