Here is the full list of all 17 Insanely Twisted Shadow Planet achievements.
Scored one million points in Lantern Run.
Reached the 9th arena in Lantern Run.
Defeated four bosses during one match in Shadow Hunters.
Defeated two bosses during one match in Shadow Hunters.
Defeated the first boss in Shadow Hunters.
Score 250,000 points in Shadow Hunters.
Score 500,000 points in Shadow Hunters.
Completed the game.
Completed the electrical zone.
Uncovered 100% of the map.
Found all artifacts.
Fully upgraded your ship.
Completed the mechanical zone.
Completed the ice zone.
Completed the ocean zone.
Completed the organic zone.
Completed the homeworld.