Thanks for playing our game :)
To answer how we were so quick with this, i'd say it's mostly due to the small scope of the game. Everything we had to do was pretty straight forward and nothing we hadn't done before. I was just adding one thing after the other and crossing it off the list without any problems. Much different to last year's jam where i was trying something i hadn't done and was stuck on a single thing for hours.
It also helps to know when and how to use certain plugins to save time.