A weapon has been implemented and is rather complete.
Spawning and respawning has been implemented, along with its dedicated UI.
Diagonal movement speed has been fixed; you were going faster in diagonals than straight.
With diagonal movement fixed and movement speed reduced (so that you can actually shoot at somebody), the controls feel very clunky. The movement system will be totally redesigned in the next version though.
Missiles have their fly height updated dynamically, but it doesn't work as it should on cliffs and other terrain variations.