This can be done both in solo and with a partner.
Doing it in solo means you can destroy the explosive crates in your own time. Usually, destroying the crates will set off the lava rock below it, which falls down. Therefore, it is best to either go to the crates and touch them to set them off (and then run away), or go down the middle path and throw attack any explosive crates around you.
Only 85% are needed, so some in difficult areas, such as when fighting Pyromites can be missed.
- Ratchet & Clank: All 4 One (first appearance)