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