A "repack" is a compressed version of a game. Officially, Deathloop is a very large game (approx. 50GB+ uncompressed). A repack compresses the game files significantly (often down to 25-30GB) to make it faster to download, though it takes longer to install because your PC has to decompress the files.
Here are a few options for a post about the "DeathLoop - DODI Repack," depending on where you are posting (e.g., a forum, a social media channel, or a website). DeathLoop - -DODI Repack-
If you face any crash on startup, try running the game as Administrator or updating your DirectX and Visual C++ redistributables. A "repack" is a compressed version of a game