Nice game. I found the execution could be handled a bit better, particularly talking about the random placement of some objects, but the result is still a really fun and challenging game! Haven't beat it though, halfway through.
Ok, starting with the bad things. I'm sure the random placement of obstacles must been a pain in the ass to make (idk), but it can be a bitch sometimes, almost impossible to pass (Sometimes the opposite). It wouldn't bother me that much, if it wasn't because they are like that at the beginning of the game... It's also weird that the music just stops when the time freezes. It's natural, but it's just really weird. It would help if at those moments it went super slow, or something like that, but cutting of all the sound...
Well, let's leave that aside. Good things. I'd say controls are perfect. Everything is necesary. It's imposible to beat it with keyboard, though. You wouldn't be able to control your jumps well, because calculating the height of the line you draw with mouse it's essential. Also, i found the stopping time while jumping and sliding, GENIUS. It really adds a lot of thinking to the run.
Overall, those two points (Jump and Time Control) are the key to the game, and while being added rather strangely, they work well making this game "stand out", gameplay wise. Plus, the sound and atmosphere don't fall short either... It's just really good! I really liked your game. Brings a lot of "Ohfuckwhatdoido? and "YUUUSSS" moments.
So... Yeah, good luck.