Here is the full list of all 30 Darksiders Genesis achievements. It takes around 30-35 hours to unlock all of the achievements on Windows.
Achieve a score of 70000 or higher in the arena.
Collect every type of creature core.
Defeat Moloch without taking damage.
Complete all 17 levels on Hard difficulty.
Complete all 17 levels on Apocalyptic difficulty.
Collect every Boatman Coin in the Boatman's Labyrinth.
Gather all the ingots in the Inferno Vault and take them to Hell's Forge.
Defeat less than 5 hounds before killing the Houndmaster in The Horde.
Face the Trickster himself Wicked Killington.
Unlock every Trickster Door.
Save the uncorrupted angels in Bastion's Fall
Find all 5 of War's elemental enhancements.
Find all 5 of Strife's elemental ammo types.
Collect 350 Boatman Coins.
Defeat Moloch Lord of Hell.
Destroy all 12 of Moloch's supply caches in War Machine.
Destroy 10 structures in War Machine.
Defeat Dagon Lord of Hell.
Defeat the grub queen in The Maelstrom.
Defeat Astarte Fallen Angel.
Collect 200 Boatman Coins.
Defeat Belial Lord of Hell.
Learn all 3 of War's Wrath abilities.
Defeat the Dread Lord's subjects in Decay.
Defeat every snake in Decay.
Defeat Mammon Lord of Hell.
Learn all 3 of Strife's Wrath abilities.
Close the rift leaking void creatures in Icebind Cavern.
Collect 50 Boatman Coins.
Destroy all 4 Soul Caches in The Slag Pit.