Yeah, that's a good comparison, but I'd say Enclave is a much tighter game in general.  It's tough as nails at times but is an atmospheric and fun hack and slasher with a lot more of a pulse than most.  I think this was Starbreeze's first outing, and it was one of the big reasons I kept my eye on them as they went forward.  It's absolutely worth picking up at this price.  I had no regrets paying full price for it at the time that it came out, and I would doubt that it's aged too badly since then.  Anything under $10 would make it a great romp.