Yeah I'm not sure you'd even bother with bullet time for this. There are other mechanics you could try like him raising his suit jacket to block bullets makes him weak to hand to hand attacks or getting grabbed and using hand to hand makes him more vulnerable to ranged weapons so you'd have to keep bouncing between the two if the level design put you in tight spaces with multiple entrances for enemies to flank you. Could have a third mode for melee weapons for some rock-paper-scissors action

My gaming library is fairly limited compared to hardcore enthusiasts but I don't recall any shooters, FPS or cover-based TPS that let you switch to grappling. At best, you might get a default melee animation or the occasional random one in Deus Ex.

I think allowing players to switch between grappling and shooting would be pretty cool, especially if you could use them as human shields or shove them into other combatants. You could enter a grapple state with certain enemies and have a status bar like Sekiro where once you do a combination of enough blocks or deal enough damage it could open them up to a hand to hand or gun finisher and if the pressure is too hot, you could just release them and bail

Even if it isn't John Wick, it could be a fun idea

Prey is one of my all time favorites

Confused this with The Last Castle w/ Robert Redford and was thoroughly confused til I looked it up