hi friend! not a bad idea, the twin stick-only stuff is interesting although as other people have mentioned the controls seem wonky. still, i wouldn't recommend making your jam game not only java-only, but require a specific controller. that makes it so a lot of people just can't play it.

I haven't seen many game jam games developed using Java. The lack of self-running distribution (i.e. one that bundles the Java runtime) might make it hard for others to play. I found the game itself quite interesting, though. My main complaints would be that a) the hitboxes feel disjointed, making it hard to tell where to aim to make the shot, b) aiming was backwards from what I was expecting for some reason, and c) the "release to throw" resulted in the arrow going the wrong way multiple times (possibly due to the springiness of the analog stick). Otherwise, I liked this. I managed to make it a few rounds in this. I did like that you could use enemy-dropped spears once you started to get them (I had 3 spears by the time I lost). The fact that the spear doesn't reset each phase felt awkward, though.

The controls are really weird, the left stick was making the player go in random directions, and it was hard to start and even harder to get it working because of the controller requirement. I think these should be considered for the future. 

I couldnt find the executable, where can i find it?

Can it be played without a controller?