How to get 'Game Developer'

Enable Accessibility: From the main menu, go to Settings > Accessibility and turn on "Allow items anywhere." This simplifies placement but doesn't affect achievements.

Start Game: Select 'Play' from the main menu and choose the top book to start a new game.

1997 Level: Unpack the boxes. Interact with the Rubik's Cube by repeatedly pressing !cn_B until it's solved to unlock the 'Solve a puzzle' achievement. Place the Polaroid camera to unlock 'Make some memories.' Once all boxes are empty, click the star to finish the level and unlock 'Beginning.'

2004 Level: Navigate between rooms using !cn_LB and !cn_RB. In the bathroom, flush the toilet for 'Gotta flush 'em all 1/7.' Find the wooden artist's mannequin and repeatedly press !cn_B until it dabs to unlock 'Strike a pose.' Continue unpacking and progressing through the story.

Subsequent Levels: Progress through each subsequent level, unpacking all boxes and placing items. The game progresses through different years, each representing a new stage of life.

'Game Developer' Achievement: This achievement is unlocked automatically upon completing the final level of the game, signifying the end of the storyline. No specific actions are required beyond normal progression.