Summer Challenge

Train all of your skills to 90% (Career).

You can probably finish career mode and all it's associated trophies without needing to get your stats buffed this high so be prepared to farm a little TP if you complete the entire Career Path winning Gold in every single cell. To help this go faster, spend the minimum amount of TP as possible until you unlock Nikolai for the missable trophy Couldn't care less about Marc. Once that's done, work your way over to the Cosmos Cup and unlock Stacy by winning Gold. He is the best coach in the game and will give you the best return in stat increases per TP spent. If done efficiently then you wont need to farm anything at all but it's up to you how you play it.

Either way, once you boost the stats for your head, arms, body and legs to 90% each the trophy will unlock.