As most reviews say, once you place https://steamcommunity.com/app/252130/discussions/0/451848855005093934/#c451851477890334456 these files on ~/.local/share/Steam/steamapps/compatdata/252130/pfx/drive_c/users/steamuser/Application Data/Dividebysheep/Local Store/ you can start from level 2. I have reached up to the second world and everything seams to be working fine, probably not as smooth as native games but not bad.