I've been playing Splitscreen for several hours total now, and we both caught on to the following things. Please note that I'm not listing ones included in the official bug list. -If one of us is sniping, if we zoom in the other player sees the sniper disappear completely. -If we are on different teams, we can see each other's gremlins and assassins at any distance while cloaked, the same as if they were on our team. -Sniper's trap "bubble" can be seen if you're on the opposite team Those were off the top of my head, I'll post more while I play.
I recall that when the sniper is invisible you could still see an ammo clip on their belt but not anything else.
This has been confirmed by a player on the Monday Night Combat Wiki. He asked me to post it here: Source
you can't choose your classes before the match starts in split-screen. not a huge deal, but it would be nice to be off and running at the bell.