To be honest, I though some of these levels were hard at first. But then later I realized that I could easily beat these and I just facepalm right there, as I get the hard badge. What a unique concept though. :) 5/5
I think I may know why this game on Kongregate is buggy, compared to Ninja Kiwi. It's because on Kongregate here, the NK interface is not included (which on NK is your profile, achievements, and coins). On NK, the games on there are autosaved more frequently than Kongregate. So to conclude, I guess you need to do almost everything in one sitting (without closing the tab that you're playing this on) or otherwise some of the data is wiped out, which is frustrating and very irritating.
@Palkia989 - It's because they got the UT stuff to be prepared when they start a new character. So basically: instead of having T0 stuff when you start, you go to your vault and get high tier stuff that you got. Hope this brings up a good point for everyone!