The "Incl.ALL.DLC" tag indicates that the archive contains all expansion packs released for the game. This typically includes:
Adds new characters, storylines, and puzzle challenges. File: Mirror.v3.3.Incl.ALL.DLC.zip ...
The official version of Mirror is available on Steam, where DLCs are often sold for a very low price during sales. The "Incl
Often includes cosmetic items, OST (Original Soundtrack), and additional character interactions. OST (Original Soundtrack)