Here is the full list of all 44 Chronicle: RuneScape Legends achievements.
Win any game with Ozan.
Win 50 games in any mode.
Have a weapon with at least 8 durability.
Complete the silver tier in solo.
Build at least 3 custom decks.
Craft a card in the collection.
Start a dungeoneering run.
Open 10 booster packs.
Get promoted to the silver league in ranked.
Reach rank 1 in the ranked bronze league.
Gain rising star in ranked.
Have a weapon with at least 10 attack.
Complete a smithing skilling challenge.
Win any game with Linza.
Win any game with Vanescula.
Draw at least 10 cards from effects in a game.
Complete a magic skilling challenge.
Play 10 games in any mode.
Complete an attack skilling challenge.
Build a custom deck.
Open a booster pack.
Complete the bronze tier in solo.
Win any game with Morvran.
Win any game with Ariane.
Unlock all the Legends in the game.
Win any game with The Raptor.
Have at least 5 base attack in a game.
Have at least 10 armour in a game.
Complete the tutorial.
Have at least 30 gold in a game.
Win a least 3 games in a single dungeoneering run.
Have at least 10 base attack in a game.
Complete an entire dungeoneering run.
Win 500 games in any mode.
Get every legend to at least level 25.
Get promoted to the gold league in ranked.
Get promoted to the diamond league in ranked.
Complete the gold tier in solo.
Have at least 75 armour in a game.
Have a weapon with at least 20 durability.
Have a weapon with at least 20 attack.
Have at least 15 base attack in a game.
Have at least 150 gold in a game.
Open 50 booster packs.