Was around a 14 days long contest.
Jam links: https://itch.io/jam/arenas-of-combat-level-design-contest
https://itch.io/jam/arenas-of-combat-level-design-contest/rate/784562
Map link: https://www.coregames.com/games/2495d3/treisis-wip-map
It is a reskin of map from counter strike. I created it by playing the game and getting a feel for the layout. I did not look at the top view of the source map.