What exactly do you have problems with?
I used the agent.max file of the sample assets package and rigged your char to the skeleton_character rig (bip01) and it worked just fine. After that I copied skeleton_character.chrparams into the export location and renamed it to player01.chrparams.
Allthough strangely I did get a warning about degenerate faces and it still exported fine.
Check the justmakegames tutorials on youtube or others (gotta give richmar1 a credit here, awesome guy).
Even the animations would play fine, I'm quite surprised it was that easy tbh. Ofc I did this quick'n'dirty style and completely skipped the weighting. But I'm just fascinated how well it still worked out.
So in short: Your mesh surely is not the problem if you use the sdk skeleton to rig it to. If you want to use your own biped that's another story. There are tuts for that too (justmakegames).
Hoped that somehow helped