Kratos wasn't just a simple skin; he was a fully realized fighter with:

Mapping Kratos’s unique physics, weapon hitboxes, and individual button inputs to work seamlessly alongside the native PC roster.

His unique stances and brutal combat flow.

While playable on a keyboard, a controller is highly recommended to properly execute the complex combos. Conclusion

Furthermore, the success of the Kratos mod has inspired modders to take on other "unplayable" characters. The PC version already has fully playable boss mods, allowing players to control Goro, Kintaro, and Shao Kahn—a feature that was never intended by the developers. If the technical barriers for Kratos continue to fall, it is plausible that we could see a "Komplete" edition mod that gives PC players the definitive version of MK9 , combining all exclusive assets from every console.

: Many users on Reddit suggest that the most stable way to play Kratos on PC is not through a mod, but by emulating the original PS3 version of MK9 using the RPCS3 emulator. However, this requires a powerful PC to avoid the crashes and performance issues common with emulating this specific title. Why Kratos was Exclusive