It was for me at times. But only briefly, like when something randomly popped up.
That giant thing in the level with all the vaults (Sorta forgot the details. But it made huge tunnels everywhere) freaked me out when it bursted through the walls. --- This is delicious signature, you must read it!
The only level where i was constantly on the edge of the sofa was Chesire, *shudder* just thinking about it now scares me, the worst part is that it is almost completely silent, save for the dripping of a pipe.....
As far as FPS go there are scarier games out there. Biohazard, for example, maintains a fairly chilling atmosphere throughout, with plenty of scripted creepiness - the first encounter with a houdini slicer, the female spider slicer that talks to you throughout a level, etc. The world in RFoM is bleak but not terrifying.
There are a couple of levels where you'll be wondering what's around the next corner, but as for enemies that actually jump out at you? There are only a few moments. --- We captured time so time made us all hostages without mercy.
Before I played this game I thought it was gona be scary ass but when you play it like 3 times around you know whats where and you're less scared but the first time was pretty jumpy --- Life is a gift, Living is a choice
Same with me with the menial thing, I just got the game yesterday, started the first Grimsby level with the conversion centre. Saw these menials loading stuff into this thing. I walked near to them and shot 1. The other one started lumbering towards me, I thought it was funny because it was so slow and then it jumps on me and starts eating my face. I totally freaked and just yelled at the top of my voice. --- http://www.weebls-stuff.com/toons/magical+trevor/