Full list of all 41 Dark Souls achievements worth 1,000 gamerscore. It takes around 80-100 hours to unlock all of the achievements on Xbox 360.
Discover Darkwraith covenant.
Discover Gravelord Servant covenant.
Acquire best weapon through magic reinforcement.
Acquire best weapon through occult reinforcement.
Acquire best weapon through chaos reinforcement.
Defeat Dark Sun Gwyndolin, the Darkmoon God.
All achievements completed. Congratulations!
Acquire all rare weapons.
Acquire best weapon through crystal reinforcement.
Acquire all miracles.
Discover Warrior of Sunlight covenant.
Reach "The Dark Lord" ending.
Acquire all pyromancies.
Acquire best weapon through fire reinforcement.
Defeat the Soul Lord Bed of Chaos.
Acquire best weapon through lightning reinforcement.
Reach "To Link the Fire" ending.
Acquire best weapon through divine reinforcement.
Acquire best weapon through raw reinforcement.
Acquire all sorceries.
Defeat the Soul Lord Gravelord Nito.
Acquire best weapon through enchanted reinforcement.
Acquire best weapon through standard reinforcement.
Defeat the Four Kings, inheritors of souls.
Discover Blade of the Darkmoon covenant.
Defeat Seath the Scaleless, inheritors of souls.
Acquire the Rite of Kindling.
Discover Path of the Dragon covenant.
Defeat Crossbreed Priscilla, the Lifehunter.
Discover Princess's Guard covenant.
Acquire the Lordvessel.
Arrive in Anor Londo.
Acquire the Art of Abysswalking.
Discover Forest Hunter covenant.
Discover Chaos Servant covenant.
Ring Bell of Awakening in Quelaag's domain.
Arrive in Lordran.
Discover Way of White covenant.
Ring Bell of Awakening at Undead Church.
Acquire Estus Flask.
Light bonfire flame.