Here is the full list of all 25 Startide achievements.
Defeat 20 bosses in Infinity mode without dying.
Defeat 30 bosses in Infinity mode without dying.
Defeat 10 bosses in Infinity mode without dying.
Complete Startide.
Reveal the secret base.
Unlock all boss parts in Constructor.
Unlock all robots in the game.
Let your drone do the job.
Encounter Biotitan invaders and live to tell about it.
Slash through 15 boss segments with Sasori-Bushi blades.
Destroy four boss parts with one volley from the Annihilation Ray.
Unmask true nature of Xar Conglomerate.
Destroy 50 boss parts with Ball Lighting.
Destroy boss core when it's shut down.
Destroy enemy part using his own bullets.
Use Turbofire five times in one battle.
Travel to the next system.
Build and defeat your first boss in Constructor mode.
Win a fight after first death as Hellberd.
Desroy the enemy with rain of meteors.
Escape your fate with Time Warp.
Build and publish 10 bosses.
Build and publish 20 bosses.
Defeat 15 bosses created by other players.
Get all skill upgrades.