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