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