Nefarious on Steam: http://store.steampowered.com/app/448290

Not a normal boss battles but reverse boss battles! Yes, the big evil robot on the thumbnail is not an enemy. You are a bad guy, and fight against the pesky heroes.

By the way, there is 2 bosses which are impossible to defeat without taking damage. But i recorded other ones without getting hit, as usual.

Big thanks to Josh Hano, developer of Nefarious for gifting me a copy of the game.

Bosses in video:

[00:00] 1. SWAT van
[00:52] 2. Dash
[02:12] 3. Dr. Mechano
[03:48] 4. Guryon
[05:19] 5. 8-bit heroes
[07:52] 6. Treble Rangers
[09:18] 7. Mack
[11:11] 8. Dash and Guryon (Round 2)
[14:47] 9. Hyper Mack
[17:01] 10. Becky

[20:51] Good ending