Here is the full list of all 54 Spiral Knights achievements. It takes around 200 hours to unlock all of the achievements on Windows.
Amass an Arsenal that includes a 5 star helmet, armor, shield, gun and bomb.
Alchemize 50 items.
Alchemize a 5 star item.
Complete a Tier 2 expedition without having to revive.
Amass 10 bombs in your Arsenal.
Amass 10 guns in your Arsenal.
Amass 10 shields in your Arsenal.
Descend to the Core Terminal.
Defeat Lord Vanaduke in the heart of the Firestorm Citadel.
Unlock and fill every equipment slot.
Earn clearance to explore Tier 3 of the Clockworks.
Defeat the Roarmulus Twins.
Amass 10 armors in your Arsenal.
Alchemize 25 items.
Amass 10 helmets in your Arsenal.
Amass 5 bombs in your Arsenal.
Amass 3 bombs in your Arsenal.
Amass 10 swords in your Arsenal.
Amass 5 guns in your Arsenal.
Alchemize a 4 star item.
Amass 5 armors in your Arsenal.
Amass 5 helmets in your Arsenal.
Alchemize a 3 star item.
Pay a visit to Emberlight, the town of gremlin outcasts.
Defeat the Royal Jelly squatting in the Royal Jelly Palace.
Amass 3 guns in your Arsenal.
Amass 5 swords in your Arsenal.
Alchemize 10 items.
Complete a Tier 1 expedition without having to revive.
Obtain a Firecracker bomb.
Earn clearance to explore Tier 2 of the Clockworks.
Amass 5 shields in your Arsenal.
Pay a visit to Moorcraft Manor.
Defeat the fabled Snarbolax that lives deep within the Gloaming Wildwoods.
Amass 3 shields in your Arsenal.
Amass 3 helmets in your Arsenal.
Amass 3 swords in your Arsenal.
Alchemize 5 items.
Alchemize a 1 star item.
Use 10 Remedy Capsules.
Amass 3 armors in your Arsenal.
Revive a downed party member.
Build an item to heat level 10.
Alchemize a 2 star item.
Power up a derelict Mecha Knight.
Use 10 Health Capsules.
Revive yourself.
Reach the first Clockworks Terminal.
Cross the chasm into Haven.
Successfully reach the Rescue Camp.
Complete a Tier 3 expedition without having to revive.
Travel the entire Clockworks from depth 0 to depth 29 in a single expedition.
Travel the entire Clockworks from depth 0 to depth 29 in a single expedition without having to revive.
Hit an opponent with a snowball in Lockdown.