Here is the full list of all 17 Legacy Of The Pact achievements.
Collect 1000 Coins In 1 Run
Get L30 On Mage
Get L10 In 5Min
Purchase The More Coins Upgrade
Defeat the BOSS
Defeat All The Bosses In 1Run
Discover Each Area On The Map in 1Run
Activate A BUFF PILLAR Once
Awaken FireRing
Awaken IceOrb
Awaken Arcane Beam
Awaken FireBall
Awaken ShadowOrb
Awaken Lightning
Defeat 50 000 Enemies
Collect 10000 Coins
Defeat The Dragon Boss in Misty Shores