Here is the full list of all 44 Kerbal Space Program achievements worth 1,000 gamerscore.
You've completed your first runway launch!
Your first EVA in space! Now you've joined the leagues of those who repaired the Skylab in 1973.
Congratulations! You've completed your first contract!
You've completed your first landing at the Kerbal Space Center!
You've been to space and landed safely back home!
You've completed your first Launch Pad launch.
Recover a lost crew member from Space.
Install a docking port and dock onto another vessel.
Land on the Mun and complete an EVA.
Make a rover and take it out for a ride!
Deploy a satellite around Kerbin.
Complete a flyby of Eeloo.
Complete a landing on Moho.
Land on the Mun and use EVA to plant a flag.
Complete a flyby of the Mun.
Complete a flyby of Bop.
Complete a flyby of Dres.
Complete a flyby of Duna.
Complete a flyby of Eve.
Complete a flyby of Gilly.
Complete a flyby of Ike.
Complete a flyby of Jool.
Complete a flyby of Kerbin.
Complete a flyby of Laythe.
Complete a flyby of Minmus.
Complete a flyby of Moho.
Complete a flyby of Pol.
Complete a flyby of Tylo.
Complete a flyby of Vall.
Complete a mission to Bop.
Complete a mission to Dres.
Complete a mission to Duna.
Complete a mission to Eeloo.
Complete a mission to Eve.
Complete a mission to Gilly.
Complete a mission to Ike.
Complete a mission to Jool.
Complete a mission to Laythe.
Complete a mission to Minmus.
Complete a mission to Moho.
Complete a mission to the Mun.
Complete a mission to Pol.
Complete a mission to Tylo.
Complete a mission to Vall.