Unlock '2015'

1997: The Beginning

First things first, head into the Settings menu from the main screen and turn on the 'Allow items anywhere' accessibility option. This won't affect achievements, but it makes placing things way less stressful – you can just dump stuff anywhere!

Now, start the game. You'll be in the 1997 level. Click on the boxes to open them, then click on the items inside to pick them up. Just place them anywhere in the room for now. The goal here is to empty all the boxes.

Keep an eye out for a Rubik's Cube. When you pick it up, mash the [B] button repeatedly. You'll see the colors change. Keep going until all sides are the same color – that's the solved state. Stop pressing [B] then, and you'll unlock the 'Solve a puzzle' achievement.

Next, you'll find an old Polaroid camera in one of the boxes. Just place this down like any other item, and you'll snag the 'Make some memories' achievement.

Once all the boxes are empty, a star will pop up in the bottom right. Click it to finish the level and unlock the 'Beginning' achievement.

2004: Moving On

This level has a few rooms, and you can switch between them using [LB] and [RB]. You'll also start working towards a cumulative achievement here.

Head to the bathroom first. Find the toilet and click the handle on the cistern to flush it. This counts as 1/7 towards the 'Gotta flush 'em all' achievement.

Back in the bedroom, you'll unpack an artist's mannequin. Before you place it, hold the [B] button while holding it to make it dab. Do this, and you'll unlock the 'Strike a pose' achievement!