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