A Robot Named Fight! didn't exactly convince me that procedural generation is superior to hand crafted levels when it comes to metroidvanias, but it's still a technically impressive feat to actually make something like this, especially for a lone developer.
The game itself is quite fun too. I didn't like the movement at first but that's only because the mechanic has to accomodate for a random number of speed upgrades. However, I quickly got used to it.
The random upgrades for progression work really well too, although getting an otherwise useless ability to traverse the terrain instead of a shot modifier or weapon is still kinda lame. That's just how this genre works; not all runs can be winners.