sorry for the late reply! there’s roughly three endings. quick messy outline below:
good ending: don’t dodge the bolt when it leaves Harlow in danger and don’t drink them dry (biting is ok i’m never gonna sit here and tell you that a little biting isn’t ok)
survival path: focus on escaping instead of attacking in the first choice and don’t pull the bolt from your shoulder in the second. don’t get the prev ending
other: don’t get the prev endings