I wanted to let achievement hunters know

So for those who trying to melee only run through the game, I will let y'all know the chainsaw will one hit all base enemies, 3 hit the mandarins , six hit Eddie, and around 12-16 hits for daddy. I didn't test pyramid head or maria because I got a joke ending which skipped the last two bosses. Also every time you load into new game plus the chainsaw will always be there, no matter how many times you beat the game in New game plus. I'm new so I'm sure most of you know these things, but wanted to share for new folks like me