Now, I'm not taking any credit for this build, many aspects borrowed from other [better] dex gadgets, but here goes.Marksman Tree
Rapid Refire [whole tree]- a must for any marksman build, will own almost all bosses until you hit the few that don't stun
Piercing Barrage [whole tree]- [many will say you don't need both, I beg to differ], another must and your mob clearing friend.
Black powder, Tinker/Crit mods - must have support skills [further away you are from what you are shooting at the better]
Rally - useful later on for boosting AR and DR, Insight [additional bonuses appear to work, extra crits not so sure]Grenadier Tree
Bauble Trap - 1st 2 tiers, [though I find that 1 point will do until higher levels]
Body of Steel - a skill to take later on, helps with survivability [but your best defense is still not to get hit]Tinker Tree
Galvanic Widgets - boost your damage
, best taken later on againStats
- Dex, Dex, Dex [and some more Dex]Gear
Anything that boosts dps - ranged speed, ranged damage, all the +elementals, crits etc.
Life and Mana [+stats and regen]
and ofc +DEXGeneral
Concentrate on maxing RR and PB [and support skills] as these are the key to surviving [IMO]Final Notes
Moderately effective? - depends on what U want to do, I've got to my level and haven't had to party to complete anything [yet - see below]
I've soloed everything up to [and including some] relics, at lvl 57, I have found a couple of bosses I can't down alone, but I think that is more related to ability than lack of power in the marksman build. Can't comment on PvP as in the words of Meat Loaf 'I won't do that'
Crossbows/Bows and Pistols - afik, no-one uses them
I've built a wiz based gadget also and agree with Scotty, gets pretty boring chucking things and kiting, but then standing with LMB down with a stunlocked boss and periodically popping a mana pot can be too
[BTW, thanks for the plug Scotty, I think you have been overly generous]