Anyone interested, anyone at all?

As the title says if there is or planned local cooperative play in the future? Just thought this game would be a cool "couch" playable game.

Can I only play this game in coop with friends?

Can I play only with Windows 10? Or is it possible to play in Windows 7 and Windows 8.1?

Don't get me wrong, horde mode itself is fun, but grind for this trophy is not. Right now I'm at rank 7, doing solo specialist missions only, and doing two of these roughly secures a rank up - each is about ~15 minutes, so 30 minutes per rank. With 19 ranks left to go I'm ~10 hours/~38 missions left from finishing it doing the same, optimal one over and over. Not sure if playing with other people increases experience, but finding games is both hard and very often I'm dropped out due to "network issue". ...