Kaze is one of my favorites platforms games, and I do recommend.

But let's talk about the things I find lame, or lacking.
- The music is not spectacular. Some levels are good, still the majority felt not atmospheric enough.
- It is true that there is not a difficulty progressions. You can have a hard level (even in the first islands), then the next one is easy.
- Some hit boxes are off, which can be frustrating for 0 damage runs.
- There was one level I couldn't find the second green fragment without y tutorial.
- You will need to memorize some levels to be able to perfect them. So add this time to your schedule. Specially the last Boss.
- There is no achievement for killing all enemy's on a level, in fact you can ignore them all, except for the bosses.
- There are indeed many auto scroll levels, some may like, some may not. And levels where you can go back are very rare.