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