I like the hand drawn art and it would be cool to see it on some of the other wall textures and stuff. The game is pretty fun but it feels pretty quiet without a soundtrack. Good work!

I like the concept, but it needs a bit more content. 

The knights are pretty easy to continuously kill with a couple traps at the start. Maybe have a little space around the traps where you can't put any more traps (this would avoid them overlapping as well)

The idea of the goblin leading the knights away is also pretty cool and could be used for some interesting gameplay/scenario's. 

 I really like the art style. Good job on that.

Pretty fun game. It was a little hard to predict how knights are going to move though.
It would be also cool to have more sounds maybe? So you know when stuff happens