Well, Im trying the Turret and the Tool box attack tree also im do the Mastery tree cuz i think they are awesome and im gonna max the first skill of Misc (forgot name) at lvl 60 i will reset to pure tool box.
Class: The Master Of Coli Pickle Sticks: Queen Weinerlooks
Get everything that attacks and boosts damage. Then get misc skills. Gosh! Being an engineer is so hard when it comes to builds. </sarcasm>
On a serious note... Well... Actually... What I said sums it up. Get the attacks. Get the turrets. Get the modifiers. Get misc skills if you can afford it. Enchant your armor for stamina then strength.
Engineers are very linear. I think they're a better for beginners than warriors are since there's little to no chance of messing up your character...
"He who fights and runs away, lives to fight another day!"