So glad to be back on Penguin universe ! I love how you mad those games connected with each other. The introduction is cool, maybe the texts could last a little longer for non native english to be able to read them.
The game is more a versus fighting game like smash bros than a platformer to me, even if there is a platform you must stay on. I find the game really difficult and feel that each time I won I was lucky on some way. The IA is really well done, maybe too much :)
The graphics are cool and the music is awesome ! A controller support may have helped me on this one. I really like that you take risks each jam, because you could have simply relied on one of the several great platformers you already did in the past. What will be next ? A guitar hero clone ? ;)