Here is the full list of all 14 Tetrogue Dragons achievements.
Beat all four acts using the knight class
Beat all four acts using the bard class
Beat all four acts using the thief class
Deal 300% damage with bullseye
Deal 100 damage during a single line clear
Widen your board to 8 blocks
Get your deck up to 52 shapes
Get your next shape display to show four shapes
Save 1000 gold in one run
Deal 45 poison damage in one line clear