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