Turns out, you cannot use keyboard/mouse layouts for this game. Apparently, this is a feature called 'tank controls' which this game type is designed for. Basically, you have no real option other than to use a console style controller. A shame, because the game looks really good, but as someone who has only ever used keyboard/mouse (since 1999, when Unreal Tournament came out, so 26 years!), it's a deal breaker for me. If you're used to an analogue controller, give this game a go.
