Hey, there! Thanks for your quesiton!
Advancement is taken care by the FIX CHECK, on page 29. It goes like this:
You may spend any amount of LOOT dice you have to enhance your Powers or get new ones. If you do so, erase those LOOT dice, roll them together, and add up all results you rolled. These are your Fix Points (FP). Spend them as follows, in any combination you want.
- 2 FP: Cool down 1 Heat on any of your Powers (including OVERHEATED ones)
- 4 FP: Add 1 Boost to any of your Powers
- 8 FP: Create a new Power