Talk:Enemy Vulnerabilities/@comment-98.255.227.115-20130814125054/@comment-11753608-20130814173129

x0 means no damage. There is no "normal" damage. There is bullet damage and other types, including physical impact damage. So, the first lesson is to remove "normal" from your vocab when talking about damage in this game or it will simply confuse you further.

Anyway, this table needs to be cleaned up so it is easier to read but you will notice it says:

0 - bullet - head.

Which means that, yes, corpus crew are invicible to bullet damage to the head. However, if you equip a mod to a weapon that does bullet base damage, it will still take the modded damage that is calculated prior to the x0 MP being applied to the bullet damage the weapon itself does.

Hope that helps.