Note: You only need the power upgrades are purchased with clusters. Do not max out any powers upgrades early in order to avoid problems. Leave at least one not purchased from each power to near the end, or do not upgrade them at all. Save the game before the "The Kinzie Gambit" mission. It is also recommended that you do not complete Gat's loyalty mission or collect all the data clusters. Then, complete all of everyone's side missions and loyalty missions (including Gat's). Next, collect all the data clusters. Complete the story missions up to and including "The Kinzie Gambit". Afterwards, you will have more new powers to unlock than if you had maxed them out before. Purchase them to earn "Where's My Cape?".