[Mark1.0]

Originally Posted by Lunick Fiore

That's from March though, here is a very recent article about Bombshell: http://www.pcgamer.com/bombshell-is-...he-action-rpg/ And note, no Multiplayer.

From the earlier US Gamer article:
"It's also going to feature couch co-op (not multiplayer online, however)..."

And the recent PC Gamer one:

"There’s no multiplayer in Bombshell, which comes as some surprise given that similar games tend to focus on co-op modes."

The second one does sound conclusive, but it doesn't specify between local and online co-op, maybe there's still a possibility we'll see it.