I had a lot of fun with this game I had never played a shooter like this until maybe a year later when I played quake 3 arena but I still like to pop this one in from time to time, this is probably my most played homebrew game.
If XL2 does visit this project again something I think would be fun to add is mission stick support because with the layout of the mission gives good position for recreate arrow keys with the buttons though I don't know if the buttons on the mission stick are linked with buttons on the base so that may create some difficulty.