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