All Challenges?

Just curious if anyone knows if/what you get for completing all challenges in the game. I've got maybe 5 left and trying to determine if it's worth going for as some of the no hit ones are pretty tough

Second this, i have to do the no hit ones as well

Anyone finished these yet?

I just finished all challenges while playing on hard difficulty, including the "no-hit" ones. So far, I did not notice anything different in the game. I finished the game once after doing this, and also did no notice anything special.