this is a reshade preset for ultrakill that tries to accurately recreate how i imagine v1 sees stuff (probably inaccurate)
Get reshade from the official site, any 6.3 version, maybe any 6 version as a whole (unsure)
launch reshade, select ultrakill. if its not there, you can use browse and select it in its steam directory.
when prompted to choose an api, select directX/DX 10/11.
when asked what effects to install, head on down to the browse option to specify a preset, select UltraVHS from my directory.
pc is lagging - turn off Immerse Mxao in the reshade menu.
weird movement (stuff sliding a little) - this is caused by ganossa motion focus and is intentional, if you dont want it at all turn ganossa motion focus off, if you want it a little more or less adjust the settings.
this preset looks best with every psx setting either on OFF or NONE.