Singleplayer questions

[Elegant Caveman]

How's the singleplayer? Is the multiplayer just arena PvP, as mentioned on the store page, or is more "meat" of the game meant for MP?

Do I need a 3rd party account if I don't play MP?

How much content is there for SP?

There's a mention of missions on the store page; is there also a singleplayer campaign? Or is that what "missions" are?

How much content is there, in terms of singleplayer playtime? I understand this can vary greatly from player to player, but just as a rough estimate.

Thanks!

[Trent]

All great questions. Subscribed to thread.