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