What do you prefer I cant make up my mind yet!

Keyboard and mouse, of course.
Doing tank controls with a controller just feels wrong.

When it comes to shooting, the mouse makes it much easier to aim quickly and accurately. When it comes to driving a vehicle, the keyboard is works well enough, but I prefer the controller in that respect.

It's possible to use both a controller and mouse at the same time; with one hand for d-pad or analog stick, and mouse on the other. This may require adjusting the controller figuration though.

I don't use a controller but your answer make me feel better about buying the game now that it is 40% off!!!
I hope I won't regret it using a keyboard...

You should be fine. The game was originally designed with mouse and keyboard in mind before controller support was implemented.

Also , the game provides several movement options in case you do not like the default.

It’s an instant buy then. Thanks!

Im glad that there is Controller support, Ive a very unergonomic setup for k+m (aka table too high so carpal tunnel in two seconds), also playing with a controller makes me able to relax more, because I can sit in a more laid back position :3