Hey
This is a nice game. I can see from other comments that people were having problems on Web version but so far I haven't had any issues and I am also using firefox. Maybe the processing power?
The waypoint system was nice change on the click and go system, but I struggled to figure out the range of the player. At one point I couldn't figure out why it wouldn't create a waypoint where I was clicking and it was because of where my player was standing. So if you develop this further, maybe you need a way to indicate this.
Good luck!