Here is the full list of all 50 Pewt 'em Up! achievements.
Destroy 10k asteroids.
Achieve a score of at least 9001 in endless mode.
Use the bomb for the first time.
Collect your first quartz fragment.
Watch the post-credit scene.
Watch the credits until the end.
Beat the game in Rookie or Cadet Mode.
Defeat Varik Gorr.
Hatch the egg.
Unlock the Silver Wing.
Buy all Weapon upgrades in the shop.
Buy all Reloader upgrades in the shop.
Destroy 1k enemy drones.
Destroy a divider ship.
Unlock the Valkyrie Type MA.
Collect 10k credits.
Destroy 100 enemy ships.
Destroy 10 asteroids or enemy ships by ramming them.
Destroy a battleship without the Silver Wing.
Buy all Ship Parts upgrades in the shop.
Collect 1k credits.
Destroy a bumper ship.
Destroy 1k asteroids.
Destroy 10 enemy ships.
Destroy 100 enemy drones.
Clear a stage without being hit once.
Destroy 100 asteroids.
Destroy 10 enemy drones.
Destroy 500 enemy ships.
Collect 50k credits.
Destroy 100 asteroids or enemy ships by ramming them.
Destroy 250 asteroids or enemy ships by ramming them.
Beat the game in Cadet Mode.
Beat stage mode twice.
Beat the game in Ace Mode.
Buy all Armor upgrades in the shop.
Buy all Shield upgrades in the shop.
Buy all Recharger upgrades in the shop.
Buy all Items in the shop.
Buy all available upgrades in the shop.
Level up Egg-kun.
Self-destruct your ship by using the bomb.
Clear a stage without shooting once.
Collect 1k quartz fragments.
Collect 5k quartz fragments.
Achieve a score of at least 100k in endless mode.
Achieve a score of at least 250k in endless mode.
Achieve a score of at least 1M in endless mode.
Enter the sacred code in the main menu.
Unlock all achievements.