I was doing pretty well on my attempt with three challenges. With huntress my +3 chilling sword and +1 spear was a nice combo for killing skeletons and guards. But I put on some too heavy armor to identify in a well and forgot to change it back. Got ambushed in the next room by 4 skeletons but they were on the other side of a big room... thought I had definitely enough time to change armor back.
Nope.
But I haven't been able to find out how many turns it actually takes to change armor, I would like to know so I don't die like this next time. Surely not more than six turns? Not only did they time to cross the room but also seemed to get at least three hits each
Although maybe I will actually remember to change it back after id next time...
Edit: also, is your armor basically zero if you get hit while changing armor?
Edit 2: in the new UI update, would it be possible to say how many turns it will take to equip an item?
Equippong/unequipping armor takes 2 turns, so completely swapping from one set to another takes 4 in total. However, this is currently affected by hero speed, so wearing excessively heavy armor would result in this taking longer than 4 turns. I agree this is a bit of a trap that isn't explained anywhere currently.
Just to make sure you know, you can throw armor at that well to ID it. You don't have to put it on. Works with anything. Weapons, armor, scrolls, wands, rings. Even potions just harmlessly bounce.
It's also useful to know that the well will identify the cursed/non-cursed status of all equipment you're carrying. Non-cursed equipment will get a blue background.