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