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