There is a "secret" mission that you can only access while downloading the game (as you mentioned from 32%).
I think you have until 99% of download completion to play it. (try pausing/starting the download)
It's no big deal, but it is extremely simple to miss as in 99% of the cases.
You're sent into a free play mode if you play it before it finishes, there's almost absolutely nothing to do except for move around. Best to let the games finishes before playing, even if it says it is available to play, sometimes it can cause issues at the end. The game isn't going anywhere, best to be safe and let it completely finish than risk a chance for a problem and might have to re-download all over again, which takes more time in the long run.
