How to Beat Sam's Internal Struggle: The Double's Climax

Enter the back room of the bar and find an exotic bottle on a shelf for a memento.

Play the Pac-Man arcade machine in the main bar area for at least twenty seconds to unlock the 'Waka waka' achievement.

Examine clues at the bar: spilled glasses, broken clock on the pillar, upturned furniture, Joel's hat near the Pac-Man machine, scratched seat near the exit, DG's bracelet at Nick's memorial, and broken glasses by the door.

Find Hugh's business card by the broken glasses on the floor.

Enter the Mind Palace (RB) and select DG's bracelet as the attacker, then the pillar as the fight location, and finally the stage as the end location.

Exit the parking lot, cross the street, and talk to Declan. Examine the graffiti behind you for a memento.

Enter the red drug store, talk to the person inside, and look at Kathy's glass jar at the counter for a memento.

Ask Hugh and then Kathy at the pharmacy counter about Dennis.

Cross the street to the coffee shop and talk to Joan about Dennis.

Continue up the street, turn left at the statue, and talk to Joe about Dennis.

Meet Anna at the coffee shop. Look at the cards to enter the Mind Palace for another memory.

Examine the cork board by the door and look at the cowboy boots keychain for a memento.

Talk to Anna by the window and choose 'Hide It' for the Analytical decision.

Go to the Basswood Jungle, enter through the employee entrance, and find Dennis' dead body.

Enter the Mind Palace and focus on HIM three times by pressing the changing button prompt.

Investigate Dennis' body quickly in this order: Dennis' injury, Exit wound, Bullet impact, Holster, Dennis' gun, Traces of blood, Dennis' corpse. This unlocks the 'Super sleuth' achievement.

Read all of Dennis' emails on his computer.

Examine the nameplate on your old desk for a memento.

Try to use Walter's computer in the large office and note his password hint in the lower left-hand corner.