No missable achievements (plus 42 unknown)
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Light a bonfire flame for the first time.
Become a Host of Embers for the first time.
Defeat Iudex Gundyr.
Hes The first Boss of the game impossible to miss unless you uninstall before killing him
Defeat Vordt of the Boreal Valley.
Discover Way of Blue covenant.
Defeat the Curse-rotted Greatwood.
Discover Blue Sentinels covenant.
Defeat Crystal Sage.
Discover Warrior of Sunlight covenant.
Defeat the Abyss Watchers, Lords of Cinder.
Defeat the Deacons of the Deep.
Defeat High Lord Wolnir.
Discover Watchdogs of Farron covenant.
Defeat Pontiff Sulyvahn.
Defeat Yhorm the Giant, Lord of Cinder.
Defeat Dancer of the Boreal Valley.
Defeat Aldrich, Devourer of Gods, Lord of Cinder.
Defeat Old Demon King.
Defeat Dragonslayer Armour.
Defeat Oceiros, the Consumed King.
Discover Rosaria's Fingers covenant.
Reach the Untended Graves.
Defeat Champion Gundyr.
Defeat Lothric, Younger Prince, Lord of Cinder.
Reinforce any weapon to the highest level.
Reach Archdragon Peak.
Defeat Ancient Wyvern.
Discover Mound-makers covenant.
Defeat Nameless King.
Discover Aldrich Faithful covenant.
Discover Blade of the Darkmoon covenant.
Reinforce the Estus Flask to the highest level.
Reinforce a bonfire to the highest level.
Reach "To Link the First Flame" ending.
Reach "The End of Fire" ending.
Reach "The Usurpation of Fire" ending.
Perform all forms of infusion.
Acquire all sorceries.
Learn all gestures.
Acquire all pyromancies.
Acquire all miracles.
Acquire all rings.
Complete all achievements.