My first character was a trapper (a tower oriented huntress) and I found it to be absolutely amazing except for ogres. Here were my strats and stat distribution.
At choke points, put a Prox mine. Behind it, put a gas trap (try to set it so that the effect radius of the gas trap ends at teh center of the prox mine. This will cause monsters to stop in teh center of the prox mine, where it's damage is maximized. These two traps will kill everything except poison immune orcs. For these fellas, drop a spike trap behind the gas trap and it should one shot them. So, Prox -> Gas -> Spike will clear everything except ogres. Sadly, Huntress traps are simply not good at killing ogres, so you will have to kite the ogre thru the traps over and over.
For your stats, put a LOT (~50) of points into trap health really early on. You will need the extra charges until you get late game gear. Once you feel like you have sufficient trap charges, drop 20-40 points into hero cast speed. You will need this to repair mines quickly, as you'll spend most of your time repairing your traps during and between waves! Lastly, put 10-20 points into trap radius. The first few points make a big difference, then it starts to taper off. After that, the choice is yours. Prox mines do incredible dmg with few points put into trap damage, so don't worry about that too much. Trap speed simply depletes your trap charges faster, I wouldn't recommend it for lowbies.
This should work for most of the game on normal. Once you get to 70'ish type content, this stat distribution becomes void, as you'll need to maximize dmg output. Let me know when you get there, good luck!
This post was edited by LumduL on Jan 29 2012 01:27pm