pretty damn good
a couple of minutes in i was like "the fuck? they spent all this time on a double dragon clone?" but i stuck with it and ended up loving it, all the little references and quirks are great, and there's a sweet level of detail that you've been able to put in that was never available on the nes. i like how (for MOST of the levels) you actually built upon their gameplay somewhat rather than just emulating it.
i'm pretty sick of all these retro throwback games as they've dominated the indie games scene over the past few years, but this is a much better homage/overall game than most of them. it didn't overcomplicate things and all the way through i was reminded of how raw and unforgiving games used to be, which i guess is the point of an 8-bit love letter like this.
obviously with so many gameplay changes the game was going to be a real mixed bag from the start - i enjoyed the sheer challenge of the megaman and balloon fight segments, but the zelda part lacked that vital puzzle factor and was essentially a linear trek through a boring dungeon with a funny shape. the wrestling and urban champs segments were both pretty dull too. anyone who grew up with the nes will probably enjoy this regardless though
btw, i love how the main character is some obscure boss that nobody remembers instead of some generic fill-in character like the one in IWBTG. nice touch - if you ever respond to this it'd be cool to know why you picked abobo of all people lmao