Oh trust me, I play test every aspect of the game many many times as it is being developed. Which is why I know the difficulty is fine where it is. As you level up your strength and find new weapons, the enemies hp will not be a concearn. You have to remember that your character is encountering these creatures for the first time, and Amber really isn't a physically strong person in general. She isn't even 120lbs. But the more you level up, the stronger she'll get and the more the monster's hp will make sense. Plus once you get ahold of guns and your powers, things will really start to fall in place.
I have played all the way through episode 1 more than 20 times using both the gamepad and the keyboard just to make sure that every action and every interactable object works properly. That being said, there are still glitches that pop up on different computers that i cannot duplicate on my own computer. So no matter how much play testing I do, there will always be those random freak bugs that will occur on different systems from time to time. Kinda like the hp being depleted when it wasn't supposed to be.
Enemy difficulty and spamming attacks are actually random. the teleportation move the Scavenger uses is set to a randomly generated variable, same with the Dweller's attacks and the Berserker's dash attack. This means that they could potentially use their specials 5 times in a row, or not at all during an encounter. I won't change that though, as that is what keeps the fight organic and unpredictable. Nothing ruins a fighting game worse than having enemies with a patern. Once you figure it out the fight may as well be over. Plus I taylor my games to myself. Personally I could care less how many people like it or not. Not to sound like an ass, but I won't make a game that doesn't appeal to me. As a lone developer, I will have the most time with the game and if I don't like what I am working on then I will not put the passion my work deserves into it. I know the game isn't that difficult because I know that I can run through it without taking any damage at all. And if I can do it then many other gamers out there can pick up the system as well. It is probably a poor sales approach to say that I don't care about the gamer's issues with the difficulty, but then again I am not a sales man. I am a developer, and I am not even really doing this for the money, I am doing it out of the love for making video games. I just happen to be making money while doing it.