I have numerous experiences with ghosts or whatever they might be but this one I would never forget. It happened when I moved up to Calamba from Paranaque due to my new job location.
I rented a penthouse; it's on the rooftop on a two story building apartment. I'm living with my girlfriend and in the first weeks we began to experience strange things, at first we tried to hold these from each other but then began to discuss them among ourselves. I told her at times I would hear a male voice whistling in a merry tone or some people (a female) conversing in the middle of the afternoons which to my surprise she hears them too. She then told me she would catch at time in the corner of her eyes a silhouette rushing through the door which I do also encounter.
Her elder sister one time visited and stayed with us and during the first day she said she sense something in the house but told us it was guarding the house or we and we need not to be afraid. She told us these even we don't tell her any stories of it.
Now, the worst one, we are experiencing this scratching, something like crawling or walking in our roof, at time we would hear thuds. I already have hints it's an ASWANG, I was so angry at it that I would curse at it when when we heard the sounds.
I got 2 handguns with me a.38 and.45, a samurai and a number of knives which I collected. I would get out of the house armed and with a flashlight and threw stones on our roof, ready to shoot anything that comes off of it.
It was one night my spitz dog which I tied to the backdoor was crying in the middle of the night and I knew it's starting again. Slowly with all the lights off I approached the backdoor and I heard the only sound that I cannot decide what kind or where it was coming from. It was somewhat coming afar, it says Kaaaak! Kaaak, sounds like a bird or what ever that is scaring the hell out of my dog. I was told that the aswang sounds afar when it is near you.
My dog was really scared with her body pressed against the backdoor crying. I was just waiting for the doorknob to turn and I'm really going to blow this aswang away if it intends to go through my backdoor so I click on the hammer of my gun and got into a position. Suddenly the sound stops. Probably heard the gun-clicking, my eyes were all over the place, looking the window direction or any. It was dark and I don't if he already managed to slip in the house.
I let out a curse for the aswang to hear seconds later there was nothing. Soon I was back in the bed and we heard rattling on our roof and again with my gun and a knife, my girlfriend along with me we went out of the house. I'd say past 12 midnight maybe and checked out our roof. I told her to throw garlic's and salt in the roof and around the house especially on the doors path. It was then that it all stops for months.
It was then we are sitting outside the house enjoying the moon that night when she notices something flying, flapping it's wings at points it to me, to my surprise I cannot make something to what I see, brown in color maybe the size of a dog some 100 meters away maybe and my girlfriend and just look at each other and we both agree its no big bird or bat it is, it was flying slow and I'm totally sure its now owl too, I've seen owls they don't get that big nor fly that way.
Today I sleep with my guns and knives beside me, I was told to wet the bullets with my saliva to have them penetrate these beings the same way I did with my samurai and knives sharpness. Who knows I maybe the first one to kill some of things or whatever they maybe
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First of all, I say that I, too, have had an encounter with an aswang; more importantly, a face-to-face encounter at that (probably a few feet away, not in their shape-shifted form of an animal, but in their human-ghoul-like form only a bit dimmed by the shade of the wall discernible as it moved to exit the opening of the door) and other experiences like some sudden smooth gusts of wind in the dead of the night, heavy moving on the roof, fear-stricken pets, you name it) so you can say I brush aside unbelief as ignorance.
I also say that I too had the same line of thinking before, had cameras ready on corners of the house and outside, knife, unfortunately though I had no license for a gun then, flashlight, and a whole lot of guts as I wanted to catch or kill one that kept on haunting our household.
For like [at] randcan, I too was rather intrigued of the sources of their powers and hell-bent on finding their scientific and physical explanations for I totally hated them because I could not understand how they do what they do and, hence, come up with a full-proof offense or defense against them.
But most importantly, like what [at] randcan said, I have come to ackowledge from research and logic that their powers are the curse from evil spirits and not of thier own. They were also once ordinary humans living ordinary peaceful lives only that they fell to darkness; that even when they are in the form of an aswang they still have the mind of a human, able to fear for their lives, get hungry, be aware of their curse, and more dangerously, retain the cunning of a human, not as wild beasts.
So I tell you this or whoever that may read and has the same line of thinking as ranger and mine before, DO NOT TRY TO PHYSICALLY CHALLENGE THEM, for even if they are flesh and blood their powers are not. Fear for the your family's life; for even if you manage to mortally wound one, remember that they avenge their kind.
Again I say to you do not fall into the wiles of the wicked one. Be strong in the Lord and in the power of His might. Put on the whole armor of God. Stand having girded your waist with truth, having put on the breastplate of righteousness...
I tell you this much though-insights or theories I have accumulated through research, experience, and sense:
1. They are solid, They don't pass through walls and to some extent they still do follow the conservation of mass - to what extent I can only theorize. They cannot enter a space without an opening their human body cannot fit in.
2. One thing though, the old knowledge that they have to kill the victim and eat their flesh I theorize to be already obsolete. Think of the description that they can replace the victim with their doppelgangers that eventually die. Although eating of flesh probably will be the case to a newly cursed, I theorize that they have evolved their feeding methods. I have heard of old folks said to be victims of aswang, but then maintained their normal lives without any physical markings of being attacked other than that they grew unbelievably thinner. Perhaps the aswang can now also be psychic feeding the life-force of the victim or feeding their evil spirit with your life-force?
3. The common concept that the curse is passed on by having the heir of the curse accept some ball or pearl via the mouth I theorize to be a hyperbole. I believe it is not a physical transfer. I theorize that it is via the acceptance of the curse or acceptance of the evil spirit into the body of the host as its new master or source of salvation; or relinquishing of the power of God over the body possible even through a thought or emotion. But it seems that it has to be made known to the dying aswang that the curse is being accepted by the heir maybe through an utterance or a whisper which should demonstrate the imagery.
So there it is.
These are some of the theories I conjured from experience and my own reasoning. I do not claim all to be the actual case. And if you have a more actual insight on the matter I hope you can also share here.
Be safe. Stay strong.