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