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