DodoGeo: Some really nice stuff, but begs the question shouldn't something like the two-handed weapons or dual pistols be there in the first place?
For the two-handed weapons, they want the extra funding in order to pay for the creation of the necessary models, textures, animations, etc.
I don't remember Titan Quest having any two-handed melee weapons (not 100% sure on that, anyone know for sure?), so there'll probably be some programming needed to add the feature to the game engine.
Dual-wielding pistols probably doesn't require any more models, but would require more animations and programming to add dual-wielding ranged weapons to the game engine.