Here is the full list of all 37 Steredenn achievements.
Pick all Bots weapons.
Finish the game once.
Destroy the Nemesis.
Meet the Mothership.
Destroy the Mothership.
Kill 10000 fighters.
Destroy a Battleship boss.
Dies 50 times.
Kill a spy with the flamethrower.
Pick all Bullets weapons.
Pick all Energy weapons.
Destroy 100 cargos.
Kill 2500 fighters.
Pick all Melee weapons.
Destroy a Carrier boss.
Destroy a Cruiser boss.
Destroy a Destroyer boss.
Kill 1000 enemies.
Pick 15 differents weapons.
Kill 500 fighters.
Kill 250 enemies.
Destroy a Frigate boss.
Destroy a Bomber boss.
Kill 50 enemies.
Pick all weapons at least once.
Pick all Heavy weapons.
Finish the first loop.
Defeat all the bosses in the Arena at least once.
Try all upgrades.
Beat the game using the Blaster only.
Destroy the Alien ship.
Destroy the Old Friend.
Destroy the Garbage Collector.
Destroy the Astroworm.
Beat the Red Baron
Destroy the Super Chabal.
Complete a boss rush.