Here is the full list of all 35 Shardbound achievements.
Open 100 Core Set Boxes
Turn an Enemy into a Boulder, then Destroy it in a PvP Match
Win 10 Matches
Win 10 Packrunner Games
Play 10 Matches
Customize or Create a Deck
Craft a Card with Marks
Complete the Prologue
Create or Join a House
Link your Twitch Account
Win 25 PvP Matches
Win 100 PvP Matches
Win 1000 PvP Matches
Win 25 Training Grounds Matches
Win 100 Training Grounds Matches
Win 250 Training Grounds Matches
Win 10 Steelsinger Games
Win 25 Steelsinger Games
Win 10 Wayfinder Games
Win 25 Wayfinder Games
Win 25 Packrunner Games
Win 10 Landshaper Games
Win 25 Landshaper Games
Win 10 Fatekeeper Games
Win 25 Fatekeeper Games
Win 10 Bloodbinder Games
Win 25 Bloodbinder Games
Win a Match with 1 Health Remaining in a PvP Match
Kill the Novice Knight's Killer with the Vengeful Veteran in a PvP Match
Play 3 Lightdancers in a Turn in a PvP Match
Play a Valiant Class Mech for Free in a PvP Match
Kill 10 Minions with a Single Reckoning Spell in a PvP Match
Attack for 8 Damage as Juro in a PvP Match
Summon a 10/10 or larger Astral Champion in a PvP Match
Control 15 Thrall at Once in a PvP Match