Here is the full list of all 44 SteamWorld Quest: Hand of Gilgamech achievements.
Deal 20,000 or more damage with a single hit.
Defeat Mechathiranos.
Defeat a certain boss before it can use Hell's Tokamak.
Complete the Midas Grand Prix.
Deal a total of 100,000 Arcane damage.
Complete the Abyssal Cup.
Deal a total of 100,000 Frost damage.
Deal a total of 100,000 Fire damage.
Have 12 instances of negative status conditions affecting foes at the same time.
Raise a hero's Strength bonus to +7 grades or more.
Inflict Burn, Bleed, Poison and Despair on the same enemy.
Heal a hero from less than 5% health to full with a single card.
Loot all treasure chests.
Defeat the Dark Lord.
Craft every punch card available at the mysterious merchant's.
Deal a total of 100,000 Storm damage.
Play six cards from your hand in one turn.
Defeat the Teras Koloss.
Perform 100 Tag Team Combos.
Complete the Coglin Cup.
Deal a total of 100,000 Physical damage.
Heal a total of 50,000 points of health.
Defeat Headmistress Hyapathia.
Evade attacks 50 times.
Recruit Tarah & Thayne.
Spend 10,000 gold.
Defeat Captain Canary and the Narcassian Dragon.
Upgrade a punch card.
Fully upgrade a punch card.
Break 250 world objects.
Spend 10 Steam Pressure on a single card.
Hit innate elemental weaknesses 100 times.
Find a secret room.
Recruit Orik.
Perform 100 Heroic Chains.
Redraw cards 100 times.
Loot 10 treasure chests.
Buy an item from the traveling merchant.
Scrap three enemies with a single card.
Craft a punch card.
Use a recovery item in battle.
Recruit Galleo.
Change a hero's deck.
Defeat Gomphus.