No missable achievements (plus 9 unknown)
Sign in with Steam or Xbox to track your progress, and:
Kill any boss
Use shield ability 50 times.
Collect 1000 Quasars.
Use force field ability 50 times.
Use energy collection ability 50 times.
Spend 50 upgrade points.
Unlock bonus levels
Unlock all ships.
Kill all bosses on diamond difficulty.