Here are the fifteen secret achievements you can unlock Dark Souls for the Xbox 360.
Check out my other guide if you’re looking for the full list of unlockable achievements in Dark Souls.
Covenant: Blade of the Darkmoon (25) – Discover Blade of the Darkmoon covenant
Covenant: Chaos Servant (25) – Discover Chaos Servant covenant
Covenant: Darkwraith (25) – Discover Darkwraith covenant
Covenant: Forest Hunter (25) – Discover Forest Hunter covenant
Covenant: Gravelord Servant (25) – Discover Gravelord Servant covenant
Covenant: Path of the Dragon (25) – Discover Path of the Dragon covenant
Covenant: Princess’s Guard (25) – Discover Princess’s Guard covenant
Covenant: Warrior of Sunlight (25) – Discover Warrior of Sunlight covenant
Dark Lord (90) – Reach ‘The Dark Lord’ ending
Defeat Bed of Chaos (25) – Defeat the Soul Lord Bed of Chaos
Defeat Crossbreed Priscilla (25) – Defeat Crossbreed Priscilla, the Lifehunter
Defeat Gravelord Nito (25) – Defeat the Soul Lord Gravelord Nito
Defeat Seath the Scaleless (25) – Defeat Seath the Scaleless, inheritors of souls
Defeat the Dark Sun Gwyndolin (25) – Defeat Dark Sun Gwyndolin, the Darkmoon God
Defeat the Four Kings (25) – Defeat the Four Kings, inheritors of souls
Occult Weapon (15) – Acquire best weapon through occult reinforcement
To Link the Fire (90) – Reach ‘To Link the Fire’ ending