Full list of all 30 Bloodforge achievements worth 400 gamerscore. It takes around 10-12 hours to unlock all of the achievements on Xbox 360.
Complete all challenge arenas
Collect all Rune Attacks
Obtain 3 consecutive perfect battle ranks
Take control of Fate
Resurrect Aerten 10 times.
Kill the messenger
Collect all health and mana upgrades
Make the prophecy come true
Hold the top rank amongst all friends on 3 battles
Discover the power of magic
Collect all weapon upgrades
Defeat a Risen Fomoiri Tank without being hit.
Kill 5 enemies while completely enraged
Ingest 25 runes of power
Use 5 different attack moves during an enemy encounter
Kill 10 enemies while they are bound with Crystals
Destroy 10 friend's challenges
Break Cailleach's heart
Challenge a friend
Perform a 75-hit combination attack
Decimate a friend's challenge
Defeat a challenge of the gods
Splatter Wodan's skull across the altar
Be the last thing Balor ever sees
Allow Balor to kill 15 of his own troops
Use the crossbow to link two attack chains together
Perform a perfect Rage Kill
Gruesomely kill an enemy while completey enraged
Tear 25 enemies to pieces
Destroyed 10 deadly warriors of the gods