Works for me on MacOS - try these instructions:
1. In Terminal app, remove security permissions on downloaded .zip file:
e.g. xattr -cr ./Downloads/HERO2_osx-arm64.zip
2. Unzip file in Finder by double-clicking it
3. In Terminal, make game binary executable:
e.g. chmod +x ./Downloads/HERO2_osx-arm64/HERO2
4. In Terminal, sign the game binary:
e.g. codesign -s - ./Downloads/HERO2_osx-arm64/HERO2
5. Either run the game binary from the Terminal (e.g. ./Downloads/HERO2_osx-arm64/HERO2 ) or by double-clicking it in Finder.
Hope that helps!