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