Why a live-action horror? Just make a movie if you've got actors. I bet it'll be point and click shit like
>combine banana with a cooking book to make a helmet
>combine helmet with a buttplug to make a boat
>use the boat on a hole in the wall to have the mouse inside go to the boat
>use the boat with the mouse on a nigger to create a zebra
>combine zebra with bleach to create a pegasus
>give pegasus watermelon so he flies you over a big lake
>if you didn't equip a gun, the pegasus chimps out and kills you and you must do it all over again
Unless the actors are going to be so bad they'll make it funny, it's gonna suck.