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