Jack Baker/gameplay

Main game
Jack is encountered in a “stalking” form for a few sections while the player is in the Main House. During these phases, Jack will either be aware or unaware of where the player is. Doing enough damage will cause him to collapse but he will rise again after a set amount of time.

Jack first becomes present in the Main House when the player walks past the Laundry room and down the hall. He will be unaware of where the player is and will go to the Dining Room.

Running into the Pantry after retrieving the hatch key will trigger an event where Jack will immediately enter and if gets close enough, will knock the player down and cut off their Leg leaving it detached, and taunt Ethan as he leaves a First Aid Med to give you a chance to survive. Unlocking the floor door and entering will despawn Jack.

Jack will be encountered as a boss fight when the player enters the garage. During this fight, he acts the same as stalking phase but at a certain point he will enter Ethan’s car and use it against him. Once damage is done he will crash the car. Alternatively, if the players obtains the Car Key and uses it against him, an event will happen where Jack tears off the car roof and takes over the steering wheel and then crashes the car. After the car crash, Jack will emerge engulfed in flames and approach the player to attack for a set period of time until the car explodes which will end the fight with him.. Doing damage will cause him to flinch during this phase.

Jack will spawn in again during an event in Easy and Normal mode after the player picks up the Wooden Statuette and attempts to leave the bathroom. Jack will walk in at this point, otherwise on Madhouse, Jack will spawn in in his unaware state when the player goes to the second floor.

Dropping down from the second floor to the first and then walking past the Laundry room will trigger an event where Jack smashes through the wall from the Pantry (leaving it open). This will also happen when you first get free from the dining room, lure Jack into the kitchen and then sprint down the hall to get the pantry room key.

Jack will not follow the player in the Sitting Room or anywhere in the Processing Area.

He is encountered as a mandatory boss fight in the Morgue after the player picks up the Red Dog's Head. After enough damage is done, Jack moved away debris on the wall to pick up a scissor weapon and allow the Chainsaw to be picked up. After the fight Jack will be “defeated” and won’t be encountered at all until the scripted fight in the Boat House.

Nightmare
Jack is fought during the early hours in his first appearance form. He later appears in the final hours as a final boss in his Morgue form, carrying his giant shears.

Daughters
Jack is first seen in the beginning, where he brings in Eveline due to finding her in the wreckage and brings her up to Lucas' old bedroom. Later on, Jack attempts to restrain Marguerite when she assaults her daughter and demands that Zoe get the rope from the garage, though when she does so, Jack then tries to attack Zoe and proceeds to self-multilate himself. If the player fails to bolt the door shut with the rope she carried earlier, Jack will ambush Zoe, with a Game Over sequence showing Jack and Marguerite dragging Zoe to "meet Eveline" with a "You Failed" message.

If the player attempts to escape via the garage, Jack will appear and forces Zoe out of the car and, angrily telling her that she's being rude for not meeting her 'sister', and proceeds to beat her while ranting that he won't stand for rudeness. It then shows a narration where it mentions that was just one resolution to Zoe's struggle and mention that the player failed to guide Zoe down the true way.