Calcium

On the upper section of the roof west of Wild Area 3. You’ll need to activate the Holovator first by completing the side mission, A Break Time Battle, climb the ladder, then drop down to the ledge below.

Climb up the scaffolding from ground level, then roll off onto the tarp below to grab this.

Located on the scaffolding, under the top platform. Go across the beam and drop to the platform below to reach it.

Found on the northernmost of the two large scaffolds on North Boulevard. Drop down from the Sector 8 or Sector 9 rooftops.

Found at the top of the scaffolding in the center.

Located under the scaffolding opposite Café Soleil.

Found on the edge of this rooftop.

Located on the wooden rooftop behind a hedge.

Found in the center of Found on the Magenta Sector 3.

Found on the Magenta Sector 3 rooftops.

Found by a chimney on the Rouge Sector 2 rooftop.

Found inside Restaurant Le Wow.

Found on the scaffolding, roll from the right-most one.

Located behind the chimney on the rooftop.

Found in the corner in the grassy area.

Located on the second from top platform of the scaffolding, to the right. Either drop down from above, or roll toward it from the ramp on the roof.

Found in the corner of this courtyard, behind the benches.

Located on the scaffolding. You can find it by going over the planks after climbing the first ladder.

Found on the scaffolding.

Located near the bottom of the scaffolding in the Wild Zone. Drop from the roof down to where the ladder is and take it down. The item will be to your left by the crates.

Located in the northeast corner of the Wild Zone.

West from entrance.