Here is the full list of all 45 SpaceMerc achievements.
Beat the pirates on hard or greater without getting hit.
Beat the game on hard or greater.
Beat the game on hard or greater without dying.
Beat the game on realistic.
Beat the game with the fair modifier.
Beat the game on hard or greater with the fair modifier.
Beat the game on settings that aren't theoretically possible.
Beat the game without getting hit.
Beat a level on hard or greater without getting hit.
Beat a level on realistic without getting hit.
Beat a level while only equipped with a single vulcan cannon.
Beat a level on hard or greater with a single vulcan.
Beat a level on realistic with a single vulcan.
Beat the game on hard or greater without shields.
Beat the game on realistic without shields.
Beat the drunk on hard or greater without getting hit.
Beat the mystic on hard or greater without getting hit.
Beat the sniper on hard or greater without getting hit.
Beat the mysterious pilot on hard or greater without getting hit.
Beat the traitor on hard or greater without getting hit.
Beat the entrepreneur on hard or greater without getting hit.
Beat the accountant on hard or greater without getting hit.
Beat the arrogant jerk on hard or greater without getting hit.
Beat the serial killer on hard or greater without getting hit.
Beat the badly positioned pilot on hard or greater without getting hit.
Beat the hipster on hard or greater without getting hit.
Beat the normal pilot on hard or greater without getting hit.
Beat the RTS pilot on hard or greater without getting hit.
Beat the grammarian on hard or greater without getting hit.
Beat the rival on hard or greater without getting hit.
Beat the musician on hard or greater without getting hit.
Beat the ignorant pilot on hard or greater without getting hit.
Beat the rich brat on hard or greater without getting hit.
Beat the speciesist on hard or greater without getting hit.
Beat the plural pilot on hard or greater without getting hit.
Beat the mutant on hard or greater without getting hit.
Beat the wannabe on hard or greater without getting hit.
Beat the strategist on hard or greater without getting hit.
Beat the cosplayer on hard or greater without getting hit.
Beat the masked pilot on hard or greater without getting hit.
School a pilot on probability on hard or greater without getting hit.
Defeat the delusional pilot on hard or greater without getting hit.
Defeat the emperor on hard or greater without getting hit.
Appear to get hit by the asteroid.
Get the achievement that's out of order.