I didn't really find it very much fun, but hopefully I can articulate why in a way that offers some potentially useful perspective.
As the player, I felt like I was thrown into the game with almost no visibility and not a lot of choice other than to hug a wall and see where it leads. On my first play I wandered around for a while, finding some money bags but no gun or ammo, and wondering where all the bad guys are for me to shoot until the thing eventually ate me.
On my second play I found some ammo and started to figure out that the messages about the monster being able to sense / hear / see me could be used to tell how far away it is and kind of triangulate its position a little (though not very effectively). But using that as an indicator of when and which way to run to keep my distance was a fruitless endeavor, and after a few more playthroughs I have yet to find a gun to be able to try to fight back.
After a few more, I see that the map is the same on each playthrough. So I guess I could systematically walk around mapping the place out until I get eaten, and do that enough times to map out the entire area and come up with a strategy. But I'm not going to do that; the game so far just doesn't look fun and interesting enough to warrant spending that much time walking around with near zero visibility to construct the game's map.
Bottom line I guess is that this initially came across as a game where I was just helpless, and later came across as a game where I would have to do a lot of trudging through in order to make progress, and neither of those seemed fun enough to keep playing.