sorry, that was mostly clarification for how I think it *might* work, specifically, allowing for more combat variety within a certain damage type. as it is now, the damage/resistance system includes something like this by using different resistances for different damage types; bullets do high damage ...

more of a general mechanic than a specific suggestion.

tldr Give specific damage sources the ability to ignore part or all of the target's resistances.

might be a little complicated, since you could have:
*flat flat resistance ignore,
*percentage flat resistance reduction,
*flat percentage ...