This is a tool-assisted speedrun. Very fast Jump'n run which is pretty much like Sonic. Rushing through the levels in highest possible speed. See how a 2D Crash Bandicoot would look like.
From Wikipedia:
Taz in Escape from Mars is a video game developed by HeadGames and released by Sega in 1994 for the Sega Mega Drive and Sega Game Gear featuring Taz, the Looney Tunes Tasmanian devil cartoon character. Learn about Taz in Escape From Mars