As for SteamDeck support, judging by the PC specs below, not to mention some of Sony's previous ports to PC, Godof War Ragnarok is not expected to run very well, if at all, on SteamDeck ...
Playstation Godof War originally released on PS5 in 2018 with the PC version arriving on Steam in 2022, and if you never got around to playing it, you can can currently get a discounted Steam ...