Hooray, 36 minutes! The more skilful ones among you might stick up your nose, but last playthrough, he took me something like 1 hour 20 mins...ouch.
After those two fall-offs, I managed to get three successful ones in a row, bringing me to 13 colossi in 4 hours 57 (297 mins), or 22.85 minutes per colossus!
Next up is one of my personal favourites, the ruin destroyer. I can probably finish him in 20 mins or so. Then number 15 will take half an hour or so. Then the final one...