Max Payne

Complete the game on "Fugitive" difficulty to unlock the "Dead On Arrival" and the "New York Minute" settings.

At the main menu after beating the game on any difficulty.

Start a game. Press Back during the game to display the main menu. Then, hold L and R, click Left Analog-stick and click Right Analog-stick, then quickly press White, Black, Black, White, White, and Black at the main menu. The cheat menu will appear, which contains "All Weapons" and "Refill" options. To access these cheats, press Back during gameplay and select the options you want at the cheat menu. Then, press Back to resume playing. Other cheat menu options must be unlocked during gameplay.

The room with the ''Dopefish lives'' poster is in part 1 chapter 7. To get to the room, do the following:

Go through chapter 7 until you get to the scene where Gognitti runs down the stairs and gets stuck in from of the locked door. Once the cut scene ends, kill enough of the baddies that you can go down the stairs safely (or just do it balls out gung-ho style guns blazing all the way...) Once you get to the bottom, turn around and head beneith the stairs to the door. Open the door, and presto! Dopefish!