Resident Evil 5 is a fun, Michael Bay-esque (up to you if that's a selling point), co-op action shooter experience. I definitely recommended to play with friends.

Ended this game when I was in KSA. Old but goodie…

If you plan on playing this game in singleplayer, don't.

Shevas AI is absolutely horrible, the inventory system is designed for 2 people, on top of that the (M+KB) controls are horrible.
The combat is repetitive, most of the bosses are more annoying to fight than anything else.

Story was good though/some insanely funny animations/quotes.
Might be an entirely different game in co-op, can't comment on that though.