I liked the game. It was a fun little challenging game at times though there are some problems. Sometimes, the rotating saws will stop mid-air when you are not directly near them and the only bug I came across was once glitching through a grass wall, but I was able to come back out without a problem. Also, having to restart the level from the beginning after getting a star becomes annoying when it would've taken less time to get the second star in some levels without restarting.
By the way, I found six of the runes, one in every level with stars to get in them, but you say there are seven and the only level left is the final level where the stars get displayed and I've looked everywhere in that level. Is there more than one rune in a level that I missed?