Test Subject Complete article on the Nitrome Wiki: http://nitrome.wikia.com/wiki/Test_Subject_Complete
The 30th and final level of Test Subject Complete. The boss, escape, and ending are included in this video. Oddly, if you turn your sound on your computer high up enough, you can hear weird sounds in the video - such as rain, a wooden board, and my breathing.
Please note that these do not come from the game, I don't actually know where they come from.