I seem to be on a DS horror roll for most missed titles. The Dementium series is FPS horror adventure set in a mental hospital and there is lots of respawning monsters. I'm not super familiar with this game but I did pick up a copy and will be posting more info on it but Dementium seems to be a bit more common on info than Theresia... was. Dementium 2 is set for release February 2010 and is said to be way better than the highly praised predecessor.
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I am the big angry zombie dog.
Survival horror gamer since first contact.
Currently questing for the Clock Tower series for the PSX/PS2. Original cases and manuals preferred. PM me with any info