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