OK Guys, first reaction is that the game is NOT Malicious. Steam users are commenting that they too are getting false flags in discussions on the steam community page. When doing anything with the game in windows or whatever, it makes defender go haywire and that's why the explorer is crashing. Just right click the game and watch Defender spike in task manager. For the time being be cautious, but this has happend before with GoDot games (found a thread on reddit)
The "Crypt.XPACK.Gen" is a false flag from GoDot engine.
But ya'll be careful still.
IF YOU WANT TO REMOVE IT, DISABLE REALTIME PROTECTION AND YOUR EXPLORER WONT FREEZE