Here is the full list of all 21 Giana Sisters: Dream Runners achievements worth 1,000 gamerscore.
Win on Reaving Falls against three bots or in an online match.
Win on Doomtide Forest against three bots or in an online match.
Win on Chasm of Tears against three bots or in an online match.
Win on Quaking Mire against three bots or in an online match.
Win on Soarstone Crag against three bots or in an online match.
Dash 3 owls in succession in a bot match (single player only!)
Win on Stranglevine Ruins against three bots or in an online match.
Hit an opponent with 5 supertwirl-projectiles during one supertwirl
Win on Embersnow Mountain against three bots or in an online match.
Jump on the heads of 3 owls in succession in a bot match (single player only!)
Win on Nettle Vale against three bots or in an online match.
Hit an opponent with a twist-upgraded cannonball
Hit an opponent with a meteor
Swap places with another player
Hit all three opponents with the same powerdash
Dash through a breakable block
Win on Gentle Promenade against three bots or in an online match.
Score a point while using boost
Twirl on top of a jump
Hit an opponent with an owl
Ghost through a projectile or hazard after using the Owlverpower