The idea is interesting, but I don't think it is executed too well.

There is no reason to dispach your guard on the first wave, no one is attacking the cart.

The cart is moving too fast for the guards to attack properly. 

The assets are pretty simple but they do the work, I can see the time wasn't enough to colour all of them and thats fine.

The music is pretty good, fits the theme and not repetitive.

Overall it is an interesting and semi-working game. I say that because the enemy AI doesn't work most of the time.

Still, it hasn't crashed or completely bugged so props for that.

Good job on delivering a game! See you in other jams.