Please note that Ironclad Alchemy is an evasion type ability. However in addition to negating the very existence of the shot (thus preventing anything said shot would have proced) it also then turns this evaded shot into armor for it and its friends. This makes Ironclad Alchemy literally the most powerful evasion ability in the entire game. However, it does have a drawback as compared to all other current evasions being that it only stops bullets. This means that things like abilities for example or even knives are not effected in any way from this ability. So fear not you need to just think differently about the sorts of weapons to engage with when facing a group of opponents supported by an Alchemist. In the future there will also be more races that deal a lot of non bullet damage and these will be very effective at breaking up this ability advantages.