Select the chapter or view the game index.
Bionic Commando Rearmed Walkthrough Area 16 - FSA Camp
Enter Area 16, another FSA Camp.
Enter the first door to your right.
You'll find Iron Boots inside.
Enter the second door.
Grab the extra life in the top right corner. As usual, be careful of the spike pit below.
Enter the third door.
Walk into the center of the room and press up.
You'll unlock Challenge Rooms 17-24.
Exit the area by walking off the screen or calling for extraction.
Haley will comment how the Iron Boots will hurt enemies when you swing into them.