The Ledge Hammer Trap

The Ledge Hammer Trap is the hidden third mission of the Clockwork Ruins Galaxy in Super Mario Galaxy 2. It can be accessed in Time for Adventure and requires the player to feed a Hungry Luma.

Layout
The player needs to first collect 30 coins on the Starting Planet. After the player has the amount, he or she should feed the Hungry Luma that is located beneath the fourth millstone. The Luma then transforms into the Ledge Hammer Planet, which the player should travel to. When he or she lands, there are Ledge Hammers hitting the ground below and the wall above. The player needs to carefully navigate through the first part and take the Warp Pipe to the second area. There are Blue Switches throughout the area, so the player can slow the Hammers down. The player needs to dodge the hammers and reach the Power Star at the end.