I don't get the issue with it being played backwards. Yeah, it's unusual, but why does that ruin the experience? You're still hearing all of the songs. Be thankful they still care enough to do something like this. They could have ended up like so many other '80s bands, just playing the same songs at every show for the rest of their career.
1.31 Watain / Mayhem / Revenge
4.5 Antaeus / Demoncy / Volahn