for animations it could possibly work to bake them into the fbx file. i think fbx or unity doesn't work with ik solvers, therefor you have to bake the animation into normal fk animations, which then work in unity. maybe you can use some modifiers and plugins/addons and then bake the animation into every frame as normal fk…
Does stuff done with special plug ins in 3ds max, work in unity in fbx format. Like animation done with rayfire. Or if I make explosion with fume x, will particles be showns in game in unity? This post is edited, bcuz I made it too fast in less then minute.