The video shows off most, but not all of the level. The level is a mix of prehistoric jetski and prehistoric jetpack segments, as well as some other things not shown :) The level has been finished for a while now, it is one of my favourites despite its length. It contains a bunch of existing enemies, like the spikey bots or geysirs, with new behaviour more suited for their usage here. The jetpack controls have been changed to suit its usage in a 2D segment.
Music as well as some parts of the level were made by airumu - the very first segment was her idea and implementation, then I took over by combining it with the 2D jetpack idea and adding the following segments.

Oh and you can see a bit of the warp room scenery in the video :)

【Crash Bandicoot 2.5: Mechanical Mayhem】
   • Crash Bandicoot 2.5: Mechanical Mayhe...