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