To create an object that will be affected by an attack, we first need to attach a Health component at the top level. This will determine the damage that the object will stand before being considered dead.

https://lh6.googleusercontent.com/j9BaI5M1z50M560KRIv8-bepauxDFX40806tTEPUnLXF8hOeKsvvKnAlhxCW3KCQiwstIDi7IIQT9Zlxdck962yS3JtEZFWiLwt4L2jyTsUky0YU74bTh-b36vT7Y45GaSFotxg_eF9shguNjnz2lutlrlNcF-mNroqUaI4yWsLhjudET56wh6VmFA

We can then create an empty subobject with a collider trigger and a Damageable component. This object needs to use the Combat layer (used only by Attacks and Damageables) and will determine the hittable area.

The Damageable component will hold a reference to a DamageableType asset, which will allow AttacksTypes to differentiate the damageables they can inflict damage to.

https://lh5.googleusercontent.com/LYdVHUT06FDAZuwUFBVuzBbQZzereRZ2OfGnpsSvyeO3cUn8X1jbK_QjsG7ojIkjARSggq5waZMcV_pURhoLBBKNL-VvE2CnKEJX6D_LKSwJzcSxTzJ2kHeCxwALkVuc3w09jh0jM5A3YyWY2Wic8EqJALJSeWbn2ym2JtPlUHIQlrXufq4CkyrOGw

Damageable types can be created from the Project panel by right clicking and selecting:

Create→Horror Engine→Combat→Damageable