If you are new to the game, these builds are frequently planned out using calculators due to their high efficiency:
Torchlight 2 features four distinct classes, each with three unique skill trees. With a level cap of 100 and a fame cap of 32, you receive a total of 132 skill points. While that sounds like a lot, maximizing a single skill requires 15 points. You cannot max out every ability. Prevent Costly Mistakes Torchlight 2 Build Calculator