Yes, you can play with your friends in the Battle Royale mode, it is a Duo mode for 2v2v2v2v2 play (which also supports bots). It will automatically pair human players together, although you can pick your own team mate by holding ALT and using the options in the top-right of the screen. If your team mate is a bot, you can also ping the map to command them to go there which is pretty sweet.
I have play this game for nearly half a year with my friend. it is a really good game. hope you enjoy the game with your friends.