The umbrella/spike puzzle wasn't... thaaaaaat... hard, I mean, I'd give it an 8.5/10 where 10/10 is absolute lunacy. I mean, it's just about taking it slow and manouevering around the spikes that pop up.
All in all I really liked it, good job, although for knytt stories players more interested in the environment type thing rather than an endless level of endless challenges it may not be for them, but you can't help that. The level was VERY LONG, which is good imo because it's been a while. Better than have it too short.