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