If it was a classic, single-player survival horror experience that you were hoping to get with Atari’s “reimagining” of their longstanding horror series, get ready to adjust your expectations because Alone in the Dark: Illumination sounds like it will be entirely unlike any previous game in the series. After Illumination was revealed, it teased two firsts for the two decade-old franchise: a cooperative multiplayer mode and four playable character classes.

Thanks to some new details from the game’s PAX showing, we now know how both of these firsts are being woven into the series.

In a move that’s likely to divide horror fans, it’s very clear that Alone in the Dark: Illumination is borrowing liberally from the winning formula that helped make Left 4 Dead such an addictive multiplayer game.

The game is set in the abandoned mining town of Lorwich, Virginia. When a flood forced an evacuation, a darkness took up residence and started populating the town with all sorts of horrors. After choosing one of the four unique characters — the Hunter, Witch, Priest and Engineer — players will be tasked with cleansing the town of the Darkness that now inhabits it.

Lorwich will be divided into sections that serve as individual maps to clear of their monstrous inhabitants, either by playing solo or with a team of up to four players online.

Because light is the Darkness’ only weakness, strategy and resourcefulness will be required to survive. This can be accomplished by making good use of each character’s arsenal. There will be an array of weapons that should be familiar to any fan of the shooter genre, as well as more specialized weapons that also double as sources of light, like the flamethrower. To keep each playthrough from becoming repetitive, the map layout, enemy and item placement will be randomized every time.

The similarities to Valve’s co-op shooter series don’t end there. Since the goal is to survive long enough to reach the safe room at the end of the map, there will be Left 4 Dead style “crescendos”, like boss fights or those frustrating bits where you’re forced to wait for a door to slowly open.

Developer Pure is looking to release the game on PC this November. They hope to have the online functionality ready when the game launches, but if they’re unable to get that finished in time it’ll just be added post-release.