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