This is a single player story driven game (there probably will be multiplayer modes though), and EA said 'no micro-transactions'.
“Many Star Warsfans, ourselves included, are really interested in the dark times, so we wanted to explore that mysterious, dangerous period,” said Stig Asmussen, game director on Fallen Order. “The team at Lucasfilm have been amazing collaborators, helping us explore and further develop this part of the timeline where the Empire is at the height of its power and any remaining Jedi are in hiding. Within this narrative, we’ve crafted a game with intense, yet thoughtful and fun melee combat using the lightsaber and Force powers, allowing anyone to fulfill their Jedi fantasy.”
From a press release, we've learned we'll meet Cal on Bracca, one of several new worlds Respawn is bringing to the Star Wars universe. He's going to meet a fairly wide cast of characters as he runs from the Empire, such as a "mysterious companion" named Cere, but Cal will also have a little droid friend named BD-1.
It's confirmed Cere is a former Jedi Knight, but we're not sure if that means she left the Jedi Order before or after Order 66.
Purge Troopers will also be a force hunting for Cal. These guys are an early version of the Dark Troopers we see in the film Rogue One, but they'll evidently be fighting enemies with the same shock sticks we see in Clone Wars. They also take great selfies, apparently.