THE GOOD (what i liked, and what stood out for me):
I found the physics and graphics very appealing, and the idea of the game was quite unique, and lead to some interesting mechanics such as being able to launch yourself while swinging, with momentum.
THE BAD (what i disliked, the bugs, and other problems):
The difficulty ramp was a bit steep, and the physics was a tad bit buggy. Having A and D for moving the rope seemed a bit fiddly, and it would have been better to have used your mouse to aim.
THE HARSH (stuff that would just make the game better, usually just personal opinion, don't take it too heavily :D ):
Have some better death animations and game juice!
OVERALL: 4,4,4 good job!