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