Yeah it's really not that hard to do. If you're good with grapple fighters like Bass or Tina Then the Half circle forward and Throw should be cake.
You simply push RB to toggle the active camo it looks a lot like Alpha-152 but clear/white instead of clear/green.
If you're good with the big slow and powerful guys then Spartan is a decent addition to the roster, though most of her movies are taken directly from Baymen she's missing a lot of the ones that make Baymen cool/unique. The few they added in place (like the plasma grenade throw) make up for it though.
Interesting enough I was in a game last night with HSD and a few others and we did a Red vs. Blue Spartan in Nassau Station