A standard installation of Outlast 2 can take up anywhere from 18 GB to 30 GB of hard drive space depending on DLC and updates. A "Highly Compressed" repack might reduce this download size significantly—sometimes down to single-digit gigabytes.
However, if you have fiber internet and an SSD, just buy the game from Steam or GOG to support the developers.
A standard installation of Outlast 2 can take up anywhere from 18 GB to 30 GB of hard drive space depending on DLC and updates. A "Highly Compressed" repack might reduce this download size significantly—sometimes down to single-digit gigabytes.
However, if you have fiber internet and an SSD, just buy the game from Steam or GOG to support the developers.