Darwin said it best. It's survival of the fittest, and oftentimes, the fittest is also the biggest. EvoWars is evidence of that.
Level your way through 19 separate evolutions, killing any enemy you can in one hit. But the same goes for you. If you get hit, you're dead!
Steer with the mouse. Left click to attack. Right click to dash.
Don't try to get kills in on the really large opponents. It's basically impossible. Just steer clear of them.