For install this mod :
Manual install : go to : Steam\steamapps\common\RESIDENT EVIL REVELATIONS 2\nativePCNext\arc\DX9NEXT
replace uPl2300/uPl2300head/uPl2310/uPl2310head
                                                                              \dat\DLC_EPISODE_03\arc\DX9NEXT
replace uPl2320/uPl2320head
                                                                              \dat\DLC_EPISODE_04\arc\DX9NEXT
replace uPl2320/uPl2320head

Or mod manager : (https://www.nexusmods.com/residentevil32020/mods/8)
go to :Fluffy Manager 5000\Games\REV2\Mods

Good Game ! :D