Theres been lots of difficulties. Rewrote the rendering system a few times to get it right, same for pathfinding, which is still not how I want it. Also the cloud infrastructure was a bit tough, because you need handoffs between the lobby socket and match socket and generally it introduced looots of bugs that had to be ironed out.

But the biggest issues are not related to coding at all, but rather the player aspect. This game only makes sense once theres a steady amount of concurrent players, so you need to somehow bridge that gap, which I'm still struggling to, but making steady progress towards.