Run Setup.exe, uncheck box to run psconfig wizard, repeat on other servers in farm.
Run psconfig on all servers in farm
Start Project Server Service
Create Project Web Application Service Application
If you’re converting a 2010 PWA to 2013 PWA, you’re done with the GUI, and next week, I’ll list out the powershell commandlets that you’ll learn to love in this process of upgrading from 2010 project server to 2013.