I was happy to see the Bulletstorm DLC go on sale. Last night I finished it all. Was pretty cool and fun. Not to hard to finish. Took me about 2.5 hours though.
I did write up a guide on TA about one only because everyone talked about kicking the enemy. However the enemy doesn't always go like you want him too that way.
So check out my suggestion and give me a thumbs up on it. It's really handy if you're playing with someone to get the achievement.