It is a grind. I went from 1 to 20 pretty quickly though. Do you have any of the weapons or boosters? They help tremendously!
If you don't, don't go piecemeal. Get this......
MiniBots: Battlebox Ultimate Bundle $9.99
It is in the Juggernaught store under Minibots. It also comes with a single player game that will help you with your aiming and your control.
I'm gonna have to get that bundle, how long do you think it would take me to get to level 26 without it
Working towards the Vorpal Blade LMO? Nice! It depends on many factors such as time, your opponents, etc. I would say a couple of months if you play a few days a week.