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 50k credits.
Destroy 250 asteroids or enemy ships by ramming them.
Clear a stage without shooting once.
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 Weapon upgrades in the shop.
Unlock the Silver Wing.
Buy all Recharger upgrades in the shop.
Buy all Reloader upgrades in the shop.
Clear a stage without being hit once.
Buy all Items in the shop.
Collect 5k quartz fragments.
Achieve a score of at least 1M in endless mode.
Destroy 500 enemy ships.
Collect 1k quartz fragments.
Achieve a score of at least 250k in endless mode.
Achieve a score of at least 100k in endless mode.
Destroy 10k asteroids.
Enter the sacred code in the main menu.
Buy all Armor upgrades in the shop.
Level up Egg-kun.
Self-destruct your ship by using the bomb.
Achieve a score of at least 9001 in endless mode.
Use the bomb for the first time.
Collect your first quartz fragment.
Hatch the egg.
Destroy a divider ship.
Destroy 100 asteroids or enemy ships by ramming them.
Buy all Shield upgrades in the shop.
Destroy 1k enemy drones.
Collect 10k credits.
Unlock the Valkyrie Type MA.
Destroy 100 enemy ships.
Buy all Ship Parts upgrades in the shop.
Destroy a battleship without the Silver Wing.
Collect 1k credits.
Destroy 1k asteroids.
Destroy a bumper ship.
Destroy 10 enemy ships.
Destroy 100 enemy drones.
Destroy 10 asteroids or enemy ships by ramming them.
Destroy 100 asteroids.
Destroy 10 enemy drones.