I'm just playing around with a temporary guide until Littlefreak3000 is done with the real one.
Beginner Build[edit source]
A guide to beginners with prestige level 4 to midgame.
When you get enough level you can change these skills.
Mister TNT -> Transfusion grenades
Super breed 2.0 -> Techno viking helmet
Solar tree - Piggy Bank - Dynamite - Bull
This is a good start, you might have to wait a few secs if you dont get enough solars in the rocket. You have 25dmg from dynamite and a bull to shove everyone in your turret. I play like that until I get around 350solar (440 if you're on a roll), then I teleport back.
Dynamite - Rubber sleeve (or the last dynamite)
After this you have a pretty good start, from here its nice to fill the dynamite section to get full power. It you feel like pushing or defend towers, I would recommend Super breed 2.0. When you have that you cast bull and have some cover to attack towers. If you having problems staying alive, then get some power pills.
Now when you're in mid-end game, putt everything into your pistol. And last of all upgrades for the bull.