We just found out that the 'grades' were not showing at the end of the game, causing the game to show a black screen instead of advancing to the main menu. We have since fixed the problem, and apologize for any inconvenience caused.
Small patch released to fix the missing 'Grade' problem.
Source: Steam Community (opens in a new tab)
Build and release context
Recorded Steam release date:
Within one calendar day of this post (UTC). The listed date does not establish an exact launch time.