Originally Posted by Fizzmatix
There are three upgrade levels for each gun, all upgrades have to be applied in order. You can no longer pick which upgrade you want without having the previous upgrade installed.
Ooh, not quite true - the first two upgrades for each gun can be applied in either order, it's just the third upgrade which requires the other two.
Also, "spear gun"? Mine's called a Crossbow
Other than that, tremendous work.