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