Here is the full list of all 15 Starlaxis Supernova Edition achievements.
Finish ALL missions with an "A".
Finish mission 4.3 without getting caught by a black hole.
Defeat at least 50 enemies in the Star Challenge mode.
Defeat at least 99 enemies in the Star Challenge mode.
Install all upgrades.
Unlock the extra level in mission 1, 2, 3 and 4.
Unlock all 6 commanders.
Finish mission 4.8.
Unlock mission 5.
Finish mission 4.6 without burning up any cube.
Unlock all ships.
Find every single one of Sniper's hideouts in mission 3.5 at first try.
Finish mission 3.8 without getting hit by Tilas Star Crawler.
Finish mission 1.8 with an advantage of at least 15 fields.
Defeat the Raptor in mission 1.4 without getting hit by it.