Dude, I'm having trouble running some of these games, especially the 3D ones, but this is smooth as butter.
It's the first one in the Jam I've played that isn't a human based avatar. It was fun to play as a tank, and the phasing between both worlds is a great riff on the theme.
The only thing that bugged me is that there isn't a manual way to close/restart/un-fullscreen the game once you die.