Kaze and the Wild Masks

Just done it. Repeat each level until you get the no damage icon, looks like a crown and a heart. Then do the boss level with no damage. Easier then it sounds, you can try each level until you perfect it.
You do not have to do 8 levels with no damage in a row

These 2 "no hit" achievements are easily the most annoying in the game. Crystals can act as a path guide in a few levels but I personally found it easier to accomplish perfect runs during time trials.

*I did get a couple perfect runs after falling off a cliff and 1 after falling into lava. So I believe falling doesn't count as a "hit" or I just got lucky.