Does anyone know if it's possible to play this on the Vita? My guess is no since it's not running on a psx emulator, but hoping someone might know for sure.

This game is made in unreal 4 iirc... it would have to be completely remade for that to happen.

For playing directly on the ps vita, unfortunately not. It isnt capable of running windows applications. One possibility though (I dont know the exact specifics since i havent done this myself), is you could setup a remote pc application on your vita which would allow you to have the game running on a pc somewhere that you control and see from your vita. The experience might not be too great though and technically its not running on the vita so probably not what youre looking for. I really wouldnt recommend it and would recommend playing on pc instead or just watching a stream of the game instead of you dont have access to a pc.

It would be sick though, xcom enemy within runs on unreal engine 3 on the vita, so maybe someday

Yeah, I have a modded Vita and was hoping something could be done to play it on there but after reading some of the other threads it didn't seem likely. This would be incredible on the Vita though.