So far I have not been able to attach my mesh to it so then I imported another one and more or less the same problems. It either have problems with random bones or just get all messed up in general. I have made my own skeleton with full hand rigging and FIRESPOT bone and it attached fine so now I just have to animate.
Took me 4hrs(2 of which were trying to make stock skeleton work) to make the first animations which was him getting hit and falling down but like stock FPSC everything.. unfinished ..I made him get back up. My plan is to do the basics of what my character needs to do but if I can I will add as many animations as possible then put the skeleton on here.
If anyone can get a mesh to properly attach to a skeleton in Blender please let me know and I can just add to animation instead of redoing them all.