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