Here is the full list of all 49 Forge Quest achievements.
Gather 5000 resource gems.
You have completed the game on Normal difficulty in hardcore mode.
You have completed the game on Expert difficulty.
Be in a game with three other players.
You have joined a friend's game.
You have completed the game on Hard difficulty.
Master everything there is to know about being a rogue.
Master everything there is to know about being a mage.
Add or upgrade 100 item sockets.
Master everything there is to know about being a warrior.
You have completed the game on Intermediate difficulty.
Have a hardcore character over level 10 die.
You have been defeated by a boss mob.
Open 50 locked doors using a lockpick.
Defeat an enemy at least five levels higher than you.
Defeat a boss without using a weapon.
You've tossed the wildlife 100 times.
You have completed the game on Normal difficulty.
You have defeated the boss of the Fire dungeon.
You have defeated the boss of the Primal dungeon.
Succesfully block 100 attacks using a shield.
Solve 25 puzzles.
Use a potion while at 10% health or less.
Bring a friend back from the brink of death by reviving them.
Heal a friend who is at or below 10% health.
You have been defeated by a trap.
Receive a healing potion from an owl.
You have defeated the boss of the Ice dungeon.
Take an item to its maximum potential via combining.
Defeat 100 ninja chickens in battle.
Defeat a boss without using any skills.
Gather 500 resource gems.
You have spoken with the hobo 10 times.
Equip a pet for the first time.
You have defeated the boss of the Earth dungeon.
You have unlocked a subclass.
Defeat 50 enemies using an ability.
Defeat 100 enemies using a ranged weapon.
Place a rune into a socket.
Somehow you have managed to best your rival in battle, granting you passage into the Earth dungeon.
You have now left the safe confines of the city and are likely to be eaten by a grue.
You have survived the bureaucracy and lived so that you can fight monsters.
You have completed the game on Master difficulty.
You have completed the game on Intermediate difficulty in hardcore mode.
You have completed the game on Hard difficulty in hardcore mode.
You have completed the game on Expert difficulty in hardcore mode.
You have completed the game on Master difficulty in hardcore mode.
Host a game and have other players join you.
You managed to defeat a boss while at or below 1% health.