Rock on! Island - A little tower defense game where you need to survive 10+ waves. Once again the cherry condition ruins it. You need to play each stage perfect or it doesn't count and the stages are really slow, so it takes a long time to replay them. Most of the time if you make it through the first two rounds while roasting some chickens you'll be stacked for the rest of the level, but making it through those 2 rounds can be really tough sometimes. The worst part is that the exact timing of when you start throwing your weapon can make a huge difference between perfect success and failure and if you are out of sync by a quarter of a second you'll take a hit, so it's essentially random chance.
The final level took me twice as long as it should have because, despite being invincible by round 10/20 and cakewalking through the rest of it just filling every square with archers I accidentally select 'give up' on round 19 and had to start over. I don't know why give up doesn't give a second confirmation like 'go back to map' does. Oh well, it's over now.
The tutorial is also easy to miss. I found it after my first failure of level 1, but I could imagine someone might not think that they could actually enter the starting tile for a while.