No missable achievements (plus 41 unknown)
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Light bonfire flame.
Acquire Estus Flask.
Arrive in Lordran.
Discover Way of White covenant.
Ring Bell of Awakening at Undead Church.
Ring Bell of Awakening in Quelaag's domain.
Arrive in Anor Londo.
Acquire the Lordvessel.
Acquire the Rite of Kindling.
Acquire the Art of Abysswalking.
Acquire best weapon through standard reinforcement.
Acquire best weapon through lightning reinforcement.
Acquire best weapon through raw reinforcement.
Acquire best weapon through divine reinforcement.
Acquire best weapon through enchanted reinforcement.
Acquire best weapon through fire reinforcement.
Acquire best weapon through chaos reinforcement.
Acquire best weapon through crystal reinforcement.
Acquire all sorceries.
Acquire best weapon through magic reinforcement.
Acquire all pyromancies.
Acquire all miracles.
Acquire all rare weapons.
All achievements completed. Congratulations!