If you want Resident Evil 4 on that beautiful Vita OLED screen without tearing your hair out, use streaming:

is the only native entry, though it is known for poor performance and low frame rates. Emulated Entries Resident Evil: Code Veronica

of the game (originally for Android/iOS) using a wrapper like

Here is the factual breakdown of your options:

If you’d like, I can instead help with any of the following lawful, practical options: