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.
Perform 100 Tag Team Combos.
Deal a total of 100,000 Arcane damage.
Evade attacks 50 times.
Spend 10 Steam Pressure on a single card.
Scrap three enemies with a single card.
Complete the Abyssal Cup.
Deal a total of 100,000 Storm damage.
Defeat Mechathiranos.
Defeat the Dark Lord.
Deal a total of 100,000 Frost damage.
Deal a total of 100,000 Fire damage.
Loot all treasure chests.
Craft every punch card available at the mysterious merchant's.
Heal a total of 50,000 points of health.
Defeat the Teras Koloss.
Complete the Coglin Cup.
Deal a total of 100,000 Physical damage.
Spend 10,000 gold.
Defeat Headmistress Hyapathia.
Fully upgrade a punch card.
Break 250 world objects.
Recruit Tarah & Thayne.
Redraw cards 100 times.
Perform 100 Heroic Chains.
Upgrade a punch card.
Defeat Captain Canary and the Narcassian Dragon.
Hit innate elemental weaknesses 100 times.
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.
Find a secret room.
Defeat Gomphus.