1-1 The Adventure Begins - Kirby and the Rainbow Curse Guide - IGN

The first three rooms are tutorial rooms that teach you how to control Kirby. Don't worry, you only have to play it once. If you miss any Treasure Chests

2-1 Dig and Dash - Kirby and the Rainbow Curse Guide - IGN

1-3 Great Cave Escape - Kirby and the Rainbow Curse Guide - IGN

2-1 Dig and Dash - Kirby and the Rainbow Curse Guide - IGN

All Treasure Chest Locations - 1-1: The Adventure Begins - Kirby

Kirby and the Rainbow Curse - Part 1: World 1-1

2-1 Dig and Dash - Kirby and the Rainbow Curse Guide - IGN

2-1 Dig and Dash - Kirby and the Rainbow Curse Guide - IGN

7-1 Infiltrate the Junk Factory! - Kirby and the Rainbow Curse

Kirby and the Rainbow Curse/Paintbrush - Level 1 - Green Valley

1-3 Great Cave Escape - Kirby and the Rainbow Curse Guide - IGN

3-1 Swept Out to Sea - Kirby and the Rainbow Curse Guide - IGN

Kirby's Return to Dream Land, Kirby Wiki