2x2 x4 is a trial map with a very small footprint.
It is the Winner of the "Towering" Mapping Contest by Edge_TM shown in his Result-Video
The contest rules only permit building in a 4x4 area, in the Vanilla Stadium with Vanilla Blocks.
AT (10:23) has a number of respawns due to
skill issue, thus is very beatable by a good player. A 5 minute time is theoretically possible without respawns.