This is a nice one! The comic is a great one to choose for a game, and the game you made is quite good. :)
Like everyone else is saying, the animation is great. Love the pixel style, and it's all very smoothly done. Seriously, well done; the animation is goregous.
The gameplay, however, leaves some things to be desired.
I like randomized content, but in this game, sometimes things were randomized to make a level impossible. I've had to knock away a bomb and eat a bird at the same time (which I can't do, so I died. Btw, the whole eating birds thing reminds me a lot of another Dino Run I've played). Levels tended to generate in a way that was either frustrating (lots of obstacles) or boring (not many obstacles, or obstacles placed in such away I could just run smoothly for a while).
The controls are a bit odd, but they're ok (W E S are odd keys to fumble with--why not W E R, which lands smoothly under 3 fingers and lets my thumb rest on the keyboard?). But the gameplay itself doesn't feel fully thought out. My jump was barely high enough to get across two spikes (^^); I had to master the timing of jumping at just the right time. The jump itself sometimes goes higher when I hold down spacebar, but sometimes it doesn't. And when there's a arc of coins in the air you're supposed to get, my jump arc doesn't match the arc of the coins at all. It feels like you spent most of your time on the animation (which is quite beautiful) but not enough time on the gameplay--which is basic and functional, somewhat satisfying, but could be a whole lot better.
There is no music or sound effects in this game, which is a real shame--this game really needs some. It has a charming atmosphere already, and sounds & music would fully complete it.
Overall, I had fun with this game--the art & animation is great. But the gameplay needs more to it. I'd love to see this updated after the jam. Nice job with this. :)