If you want to enjoy this game, don’t pay
At very beginning, I really enjoy this game, so I spent more than USD 400. After that, I found my AI opponents became super strong. it is really unbalance - they are using EM gun , disk luncher and never miss. The game became a torment to me. So I tried to spend a little bit more and it makes the situation getting worse. I have invited my friends to join, we did have happy time but they all quit after they spend money on this game, they don't know why they have to pay and make themself so painful. So if you want to enjoy this game, don't spend the money