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