Do not search for random Google Drive links. The safest source is the official Mirror 2 modding Discord or the "LoversLab" forum thread dedicated to Project X. Look for a file named: Mirror2_ProjectX_Portable_v2.31.7z
The community is currently working on a version that aims to add entirely new fan-made characters and match-3 abilities. If you want to stay updated, join the modding Discord. Do not rely on Steam forums, as mod discussions are often swiftly deleted. mirror 2 project x mod portable
Because the mod runs externally, you can actually copy your entire modded save state between computers. Place the Mirror2 folder from LocalAppData onto a USB drive, and the "Portable" mod can read it from any machine. Do not search for random Google Drive links