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