Pretty self-explanatory. I overplayed a pair headsup (I turned my hand into a bluff when the board came running aces on the turn and river as I could plausibly represent a lucky full house) vs. a flopped straight headsup and relinquished the chiplead. Then I was short-stacked and missed a freeroll to double up back up to a 3:2 disadvantage; we chopped. Then I got it in preflop with Ax in a 60/40 and villain turned a gutshot to bust me. I can't really fault villain for gambling with Kx with a 5:1 chip advantage, but it's not necessarily the spot I'd choose in his shoes with only 1 bet invested against my shove of 20 bets.
Fun times were had despite the disappointing finish, I think I only saw about 11% of flops all tournament, which is much tighter than I usually play. Of course, I was severely short-stacked in the early stages of the tournament, coming back from 200 chips with a quadruple up to become vaguely relevant, and patiently waited to double up back to a useably-sized stack. From there I kept my tight image and used it to pull off some big bluffs later on when I went card-dead. If I had won just one of five or six 60:40 weighted flips in my favour when we got down to the final five, I most likely would have had an insurmountable chiplead. Oh well. Sometimes you get unlucky.