Yes, they're slow, but the issue is that by the time you kill like 10 of those black helmets, you would have already run out of food.
I ran a similar build as your, although I put 6 into SCU, and had like 8 Attack. Sniping takes 5 sta. It takes 3 snipes to kill one of them, that's 15 sta. If the rng makes it so you have to face 15 of them, that means you need 225 sta. Lona reaches the graveyard with either 60 or 65 sta, and 70 food, which would equal a networth of 200 or 205 sta. Honestly, I found killing bandits a lot easier. 1 snipe and then 1 arrow and they're gone, or maybe 2 snipes at most. Goblins, for whatever reason, were eez peez. Bloodlust always activated on them, but strangely enough, never activated for anything else.
Oh, and I was playing on survival mode.