Nice game although there were a few frustrating things. The slow down effect was good, but it was inconvenient sometimes. When I just wanted to keep moving, the slow down would stop me for about half a second and then I could carry on. I think it would have worked better if the slow down only happened when you are stationary and re-rolling.
Also, I did find it a little strange how the enemies faded in. This meant that while the enemies looked like they could be damaged, sometimes they couldn't because they hadn't finished their animation. This is made much worse when time is slowed.
Other than these, the game looks and feels great. The music is nice too. Nice work for 48 hours!
Great job!