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