The writing and progression of dialogue really stood out. It was a pretty funny version of graphics wars. But what really shined for me was that even though it was a rather simple runner approach, it actually had some cool depth in that the actions in one dimension impacted the other. At first, I was only sparingly shooting when I needed to, but then on my 3rd try I started spamming the shoot button and realized how much that changed the jumping side.
It's really cool how that almost makes the player create their own level on the fly and creates an almost automated balancing of difficulty. So cool.