The only grind wall I hit was stage 4. The survive x minutes stages are uninteresting, I ended up creating my own mini game by collecting all power ups while still not getting hit, only ended up missing 1 through all of them. Other than that it was a fun game!
Save 150 gems to get a single legendary, that's your main dps, 2 toads with optimized heal or healing aura and 2 manticores up front, I completed both badges in 12 hours from start to finish.
Builder deck is good enough to beat the campaign (only 1 loss in all difficulties).
5 thief
5 recruit
4 guards
5 mage+1
5 pixies
3 magic defense
5 add bricks
5 builder
5 tower
3 tavern
3 house
3 babylon
3 school
2 fence
5 wain
5 all bricks
4 large wall
5 reverse
Hi, thanks for playing. Sorry for the lack of creativity haha