There's a cave off to the left of where you get to the jumping puzzle go to the end of it and one long jump down as the first platform spawns and three more spawn after it gotta go pretty quick easy with hunters and triple jump doable with double jump/better control and a pain in the ass with Titans and warlocks. The last platform spawns right next to the ledge right in front of the hallway(?) that leads to Athens room or whatever you'd like to call it.