Here is the full list of all 38 Orange Moon achievements.
Unlock Shotgun
Buy upgrade canister
Find first deposit and deploy beacon
Complete first level
Upgrade your equipment first time
Destroy turret with grenade
Complete level 2
Complete level 3
Complete level 4
Complete level 5
Complete level 6
Complete level 7
Complete level 8
Complete level 9
Kill a loader
Deal with the Recycler
Kill Abomination
Solve three obelisks puzzle
Talk to raider
Upgrade all weapons
Upgrade all equipment
Upgrade all weapons and equipment
Find Plasma rifle on the Moon
Unlock Hand Cannon
Unlock Minigun
Accumulate 3000 alien matter
Have 10 upgrade canisters in your inventory
Lure forgotten astronaut to a jammer and kill it.
Reach Etanega mines
Fuel the hovercraft and reach the other side of toxic fog.
Destroy 100 small orbs
Destroy 25 turrets with grenades
Discover excavation site
Find laboratory
Board Punisher M1
Destroy Punisher M3
Finish the game without upgrading any of your equipment
Finish the game