Here is the full list of all 42 Elden Ring trophies - there are 24 bronze, 14 silver, 3 gold and 1 platinum.
Obtained all trophies
Achieved the "Elden Lord" ending
Achieved the "Age of the Stars" ending
Achieved the "Lord of Frenzied Flame" ending
Defeated Dragonlord Placidusax
Defeated Hoarah Loux, Warrior
Acquired all legendary talismans
Defeated Maliketh the Black Blade
Acquired all legendary armaments
Defeated Godskin Duo
Defeated Shardbearer Malenia
Defeated Shardbearer Mohg
Defeated Lichdragon Fortissax
Used kindling to set the Erdtree aflame
Defeated Fire Giant
Acquired all legendary ashen remains
Defeated Loretta, Knight of the Haligtree
Upgraded any armament to its highest stage
Defeated Commander Niall
Defeated Shardbearer Rykard
Defeated Godskin Noble
Acquired all legendary sorceries and incantations
Defeated Valiant Gargoyles
Defeated Astel, Naturalborn of the Void
Defeated Mohg, the Omen
Defeated Regal Ancestor Spirit
Defeated Ancestor Spirit
Defeated Shardbearer Morgott
Defeated Godfrey the First Lord
Defeated Dragonkin Soldier of Nokstella
Defeated Elemer of the Briar
Defeated Mimic Tear
Defeated Magma Wyrm Makar
Defeated Shardbearer Radahn
Defeated Royal Knight Loretta
Defeated Rennala, Queen of the Full Moon
Defeated the Red Wolf of Radagon
Restored the power of a Great Rune
Defeated the Leonine Misbegotten
Defeated Shardbearer Godrick
Defeated Margit, the Fell Omen
Arrived at Roundtable Hold