Full list of all 145 Across the Obelisk achievements.
The base game contains 129 achievements, and there are 2 DLC packs containing 16 achievements.
Stack 200 Crack charges
Gain 100000 gold
Unlock the character: Gustav
Craft 250 cards
Gain 100000 shards
Stack 200 Bleed charges
Upgrade 500 cards
Achieve Rank 35 with a Hero
Stack 50 Fury charges
Spend 250 supply on town upgrades
Repair the altar to its former glory
Unlock the pet: Lianta
Buy 50 items
Stack 40 Regeneration charges
Unlock the character: Bree
Unlock the character: Malukah
Kill 50 Boss monsters
Kill the boss: Belphyor
Unlock the character: Nezglekt
Sit on the mysterious throne
Kill the boss: Minotaur
Unlock the character: Grukli
Kill the boss: Rhodogor
Craft 100 cards
Master Madness Level 1
Deal 400 damage with a single hit
Stack 200 Spark charges
Unlock the character: Wilbur
Unlock the pet: Champy
Kill the boss: Ursur
Kill 500 monsters
Defeat the game
Kill the boss: Lord Hanshek
Stack 40 Bless charges
Stack 40 Thorns charges
Unlock 90 warrior cards
Unlock the character: Sylvie
Give the two beggars enough money to take the ship
Kill the boss: Elder Dryad
Play 5 games
Unlock 90 healer cards
Stack 200 Burns charges
Achieve Rank 20 with a Hero
Stack 200 Poison charges
Unlock the pet: Flamy
Unlock 90 scout cards
Feed the harpies
Become the new champion of the arena
Unlock 90 mage cards
Kill the boss: Astarios
Stack 50 Poison charges
Upgrade 100 cards
Kill the boss: Scorn
Unlock the character: Thuls
Kill the boss: Tulah
Unlock the pet: Slimy
Kill 200 monsters
Stack 50 Crack charges
Stack 50 Burn charges
Stack 50 Bleed charges
Stack 40 Insane charges
Stack 40 Sanctify charges
Unlock the pet: Orby
Kill the boss: Faeborg
Stack 200 Chill charges
Unlock the character: Zek
Spend 30 supply on town upgrades
Unlock 60 warrior cards
Kill 10 Boss monsters
Unlock the character: Cornelius
Kill the boss: Erekhal
Stack 200 Block charges
Unlock 60 mage cards
Gain 5000 shards
Unlock 60 healer cards
Unlock 60 scout cards
Gain 5000 gold
Kill the boss: Graendor
Deal 150 damage with a single hit
Kill the boss: Ignidoh
Stack 50 Spark charges
Unlock the character: Heiner
Stack 50 Chill charges
Unlock the pet: Betty
Unlock 30 warrior cards
Stack 50 Block charges
Achieve Rank 5 with a Hero
Unlock 30 scout cards
Unlock 30 mage cards
Unlock 30 healer cards
Unlock the character: Ottis
Kill the boss: Yogger
Buy 5 items
Craft 5 cards
Claim 1 treasure
Play 1 game in cooperative multiplayer
Kill 20 monsters
Upgrade 5 cards
Spend 1 supply on town upgrades
Kill the boss: Ylmer
Deal 50 damage with a single hit
Discover what cultists throw into the pit
Save the baker's son
Accidentally burns the baker's son
Unlock the pet: Stormy
Make a bet with the crocomafia and win
Fight for the crocomen after visiting their village
Fight for the lizardmen after visiting their village
Show who is the strongest on the battlefield
Claim 25 treasures
Stack 200 Fury charges
Kill the boss: Matriarch
Unlock the pet: Sharpy
Unlock the pet: Mozzy
Become the master craftsman's apprentice
Unlock the pet: Oculy
Unlock the pet: Asmody
Find a new member for the Tsnemo crew
Read what happened in the void
Kill the boss: Fred
Unlock the pet: Daley
Unlock the pet: Chompy
Unlock the pet: Chumpy
Deliver the Rime of the Ancient Mariner
Find the Happy Owl founder's runes
Have a big feast at the Happy Owl
Kill the boss: DT-800
Kill the boss: Ratone
Unlock the character: Navalea
Unlock the character: Laia
Kill the boss: Sandworm
Make a wish to the Djinn
Kill the boss: Mortis
Survive Basthet's ordeal.
Unlock the pet: Fenny
Unlock the pet: Holy Cuby
Unlock the pet: Dark Cuby
Get the Djinn to corrupt you a ring
Discover the secret chamber under the sands of Ulminin
Summon the three scarabs and let them run free
Fulfill the vision and complete the ancient mural
Play a game at the ancient machine