Cool game! Although not big on content (very understandable), it has a really good foundation and can be easily built upon after the jam. I think you shoul'dve probably added a bit more difficulty by maybe having a bit more goblins spawn? Another suggestion is making the knights follow the builds and gatherers as what usually happened to me was the knights would be too far from the main buildings (where builders chill) and they couldn't reach in time to kill the gobilins, although it's not a big deal here since I can just respawn them back in. Overall, a fun game and something to be proud of!