Here is the full list of all 29 ESCHATOS achievements.
Reach option level 50.
Reach loop 4 in ENDLESS MODE.
Clear ORIGINAL HARDEST Mode.
Clear TIME ATTACK Mode.
Clear ORIGINAL HARD Mode.
Clear ADVANCED HARDEST Mode.
Color all 10 planes in the epilogue.
Clear ADVANCED HARD Mode.
Reach a x20 score multiplier.
Finish off the final boss at point-blank range.
Destroy over 512 enemy bullets with one shield activation.
Clear ADVANCED NORMAL Mode.
Play all modes and difficulties.
Reach option level 25.
Hold out until the mirror shield autodestructs.
Clear ORIGINAL NORMAL Mode.
Beat the mysterious organism that had merged with the moon and escape. (Normal difficulty or higher)
Watch the replay of another player.
Fight off the giant mothership in Area 20 and plunge towards the moon. (Normal difficulty or higher)
Clear ADVANCED EASY Mode.
Fight off the transport ship in orbit. (Normal difficulty or higher)
Follow the transport ship into orbit. (Normal difficulty or higher)
Reach option level 10.
Clear ORIGINAL EASY Mode.
Defeat the Kraken in Area 24 before it is killed by enemy laser.
Survive over 30s with 0 shield.
Destroy the 3 eggs on the carrier in Area 14.
Confront the giant mothership in Area 5. (Normal difficulty or higher)
Upload a score to the global leaderboard.