We all know that most of the hammer-spammers are armor users. I've noticed that most of them use the cape called Berserk Cape. It increases the defense bonus for the equipped armor. Which means that if the hammer-spammer has fully upgraded armor, you won't be able to kill the hammer-spammer with...
Well, I have experienced that I couldn't switch weapon, I can't even reload it. I lag a lot, but it also happens to me when I'm not.
Also all my wins, coins, gems and friends disappeared after I updated my device. Thankfully it didn't delete any of my guns, or skins.