Pokémon Legends: Arceus has never been released for PC, so it has no PC system requirements. It came out on Nintendo Switch. Released in 2022.
There is no emulator for Nintendo Switch that this site will point you at.
Platforms: Nintendo Switch.
System requirements for the game Grand Theft Auto 5
System requirements for the game The Witcher 3: Wild Hunt
System requirements for the game Portal
System requirements for the game Tomb Raider
System requirements for the game Left 4 Dead 2
System requirements for the game Red Dead Redemption 2
System requirements for the game The Elder Scrolls V: Skyrim
System requirements for the game Half-Life 2
