Not an environmental after all, eh? In that case, downloading now.
EDIT: That was a lot of fun!
A really good level! Well done!
Also, it was a nice surprise seeing my knyght tileset appear there, and you used it really well.
I liked the changes from night to day and back; really cool. Some screens were missing ambience, like water. And the screens of sky were generally rather bland and sometimes didn't match the screen below them very well, which was a shame.
One other word of advice would be to suggest to ask someone to check the spelling and grammar of your level, as your English isn't perfect. But it's a small issue; you could always understand what was being said. I suppose it adds a certain charm.
Overall, this was a really good level, one of the best new levels I've played for a while. Fun challenges (the difficulty was just right for me) that were rarely frustrating (which is great) and really, really good-looking scenery (you clearly have an eye for graphic design). I didn't want it to end! So thanks, and well done.