Here is the full list of all 24 Cloudrift achievements.
Complete 64 loopholes in a single player game
Complete 128 loopholes between you in a two player team game
Complete 64 peak hops in a single player game
Complete 128 peak hops between you in a two player team game
Complete 48 peak rides in a single player game
Complete 64 peak rides between you in a two player team game
Complete 48 low rides in a single player game
Complete 64 low rides between you in a two player team game
Observe a worm traveling through a wormhole in a single player game
Observe 4 worms traveling through a wormhole in a two player team game
Obtain 48 no jump multipliers in a single player game
Obtain 64 no jump multipliers between you in a two player team game
Obtain 32 no movement multipliers in a single player game
Obtain 64 no movement multipliers between you in a two player team game
Complete 16 gravity well hugs in a single player game
Complete 32 gravity well hugs between you in a two player team game
Complete 16 cloud agitations in a single player game
Complete 32 cloud agitations between you in a two player team game
Change the cloud 16 times in a single player game
Change the cloud 32 times between you in a two player team game
Be repulsive 16 times in a single player game
Be repulsive 32 times between you in a two player team game
Observe one or more invisible geese
Read the Cloudrift tips