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