Oh it's 20$? Interesting. I'll definitely try the demo though.
I think the Berserker sounds cool. I'm a sucker for druid and warlock/necromancer classes so anything that seems similar is where I'm at.
You also get 4 spell slots which you can use to learn spells from spell tomes (separate from your skill point abilities). So any class can be a summoner if they have a spell tome to use to learn a spell.
Oh, also you get a pet. Your pet has an inventory, can run to town and sell stuff, and can buy and bring you back scrolls of identify/portal and healing/mana pots. There are fishing holes and the fish you get you can feed to your pet to transform them for an amount of time. Like a Webfish will turn your pet into a spider that can snare enemies with spider webs or Bonefish that will turn your pet into a skeleton.