In Spiral Knights, since I've reached tier 2, I've noticed that I take a lot more damage from elemental and shadow attacks than I do from normal ones. After doing a little research, I've discovered that this is because damage is split into 4 types (normal,piercing,elemental,shadow), and your armor's defense is different for each one. (I used the normal cobalt set, so that gave me good normal/piercing resist, and nothing for the other types.) Now, in tier 1 everything does just normal damage, and in tier 2, everything does half normal damage. However, I'm unaware of any armor set that covers all 4 damage types on its own, and tier 3 has enemies doing pure elemental/shadow/piercing damage. So, my question is as follows.
In tier 3, is it feasible to take just one armor set (for example, the default), should you mix and match resistances (for example, having armor of elemental/piercing resist and a helmet that resists normal/shadow), OR should you have different sets of armor depending on which levels you're planning to go through?