Heyyo,
It's really hard, but really fun. I had a great lan party on this game.
You also can use bots with it. I like to use RCbot for marines and hive, or with whichbot for the hive, and then I just go on marines n' build stuff for them (sadly, they don't know how to do commander. Cheesh tried basic commander abilities in early versions of RCbot but that idea was apparently scrapped
)
Still, give it a shot, it's pretty fun online too. It's a pretty sucessful mod, but for NS2, they wanna make it like DOD:S where you have to pay extra to play it... so that's lame...