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