Dude the game is very simple and the boss are easy to kill CAN YOU GUYS NOT SEE AN OBVIOUS WEAKNESS!?
On 2nd phase everytime the boss attack the weakness appear for a brief moment... Skill Issues at its finest
I won't say skill issue (mostly because that's mostly used as insult/showoff) but I have to agree, even as mentiones in my previous comment a couple pages back, I've been having a weird issue where while aiming with the wood pole up/down, I can't attack as if is not allowed anymore, even with that I managed to finish the content with zero deaths and zero successfull rapes.
Boss wise yeah, back off a step, and aim; first phase doesn't really matter where to shoot much, but second phase just bait an attack, and shoot the red orb.
As for those struggling with ammo... You don't actually need to fight really, all enemies are easy to avoid and I'm telling you, I killed only the zombies when you're opening the electric shuttle that's pretty much mandatory + 3 more, only place that requires to kill some enemies due to attack rate is the sewers due to the rats, as is way harder to just run pass them. Rule of thumb for this game is; PRESERVE AMMO BY AVOIDING COMBAT AS MUCH AS POSSIBLE BY BAITING AN ATTACK AND THEN RUNING DURING THEIR "RECOVERY ANIMATION" (the brief time between them getting ready to attack you again, and on that note, let yourself get grabbed here and there by holding Z, only a few enemies will actually damage you and as long as you escape before orgasm, it still counts as clean, just use masturbate to reset the red bad when safe and done, no ammo wasted).