You might want to file a bug report with Unity, in the data folder - level5, sharedassets0.assets.resS, sharedassets1.assets, sharedassets1.assets.resS and UnityCrashHandler64.exe (the irony) failed to extract.
Viewing post in Portal 2(D) jam comments
Can you try downloading this file maybe this works:
https://drive.google.com/file/d/1JKuziReljn95YUU0J8oOsuVAulnQhlK1/view?usp=shari...