There are three enemies: dogs, which are swift and can howl for backup if not properly killed which takes around five hits with the pickaxe, spiders, that quickly hatch from laid eggs and generally take two to three hits from the pickaxe, infected humans (results from an interesting plot development), and finally the coup de grace: the “rockworm” which are huge behemoths that must be avoided at all
costs because they can easily take Phil out with one masterful strike.
Penumbra’s graphics won’t impress anyone but they are efficient at illustrating a constricting environment (the intensity is bolstered by the graphics and sound and makes you feel alone and helpless and constantly surrounded by foes). If Phil stands still while he’s crouched he will squint his eyes and the screen will turn a bluish hue; thus, enabling you to see a little bit farther without resorting to light emitting devices that attract enemies. The mechanic greatly encourages stealth as a viable solution instead of resorting to the difficult combat. In addition to oddly seeing in the dark, Phil cannot stare at a single enemy for too long without revealing his position. (Enemies will not spot you if you manage to keep five to six feet away.)
The sound is one aspect in which Penumbra collection really shines in because it’s a main contributing factor that builds up suspense and delivers a good number of scares without resorting to cheap scare-tactics. The howling wind, scratches and muttered whispers of foes really enhances the experience.
Overall the Penumbra Collection is worth the price of admission; in this packaged deal, you get two great games, and one tolerable puzzler and an overall great collection, with an unforgettable ambiance, and a memorable addition to the survival horror genre.