I'll admit: this battle was one of the hardest i've been in, if not the hardest. I was trying to factor in every ounce of damage that i could, and I'll actually admit, i messed up on multiple occasions.
a big one was the fact that i tried to trace infiltrator instead of pressure, which would have caused you to EN KO yourself earlier and not have enough energy for the destiny bond, if i am correct.
another one was trying to hax you with freeze earlier, instead of relying on a more stable source of status like paralysis.
the largest one was the fact that i sent out aurumoth to deal with tyranitar, instead of castform. That mistake was the one that cost me the game, as you were able to kill it right off the bat.
All in all, good game and best of luck in the future.