I enjoyed lining up trick shots on the enemies. Found the last level a bit tricky, but that might be due to my tendency to have both characters near each other most of the time. I also didn't figure out how to open the cage in the level telling you to free your friend, but just ended up killing everything with the guy that was free and that worked. I had a good time and it sounds like you have plans to push this idea further that I look forward to seeing come to fruition!