This is a really neat transcription of the rules and conventions of beat-em-up games into tapletop form. Clean, straightforward, though as mentioned, the rules for combos aren't fully explained. I assume filling the combo box is something that's supposed to occur repeatedly over the game, since the conditions are so simple to fulfil? The limit break, using adversity as fuel to build up to a powerful move, is spot-on, and the thing about earning arcade tokens for extra lives with high scores and items you get from breaking stuff  gave me some serious nostalgia for the 80s. The fonts work well to evoke that feeling too, though the readability isn't the best for this aging GenXer. I had a lot of fun imagining all the cool art that's going to be in your book, so thanks for giving my imagination the workout!

Perfect marriage of game concept and system. One thought: right now the threats are all painted in broad strokes, which feels in line with the arcade genre but I imagine could make a successful run feel a little shallow. It might help give the action a bit more 'punch' if the threats were slightly more defined or tied in to the opening premise… so that the big bad isn't just a 'cyberwarrior' but instead explicitly related to the Police, or the Fat Cats, or some other thematic thread that carries through the whole thing.

Perfect marriage of game concept and system. One thought: right now the threats are all painted in broad strokes, which feels in line with the arcade genre but I imagine could make a successful run feel a little shallow. It might help give the action a bit more 'punch' if the threats were slightly more defined or tied in to the opening premise… so that the big bad isn't just a 'cyberwarrior' but instead explicitly related to the Police, or the Fat Cats, or some other thematic thread that carries through the whole thing.

It's really clever and evocative. I think the Havoc Engine lends itself to this premise very well. My only nit-picks (and please take these in the spirit of collaboration rather than critique) were the random item chart on page 8 (it calls for the GM to roll 2d6 and consult the table, but the table is numbered 1-10) and the call to Choose Your Fighter (page 11) when one of the pre-gens is literally called "The Fighter."  Those are easily remedied, however, and don't ruin my immersion at all. Great work. 

Cool idea. I see other comments about the readability. It seemed mostly okay to me after you updated it. The font does have some legibility issues, W's and H's look really similar, but that's a minor issue. I see why you picked it to help evoke fighting game nostalgia.

I really like the limit break idea. Turning 1 results into a resource for a big move is a great concept. I'm a big fan of how you executed that. I'm not sure if I'm missing something though regarding Combos and Combo moves. I understand that once you unlock you combo box, you can do a combo move with another player once per session. Does that mean that each player can combo move only once per session, or each "pair" of players can only combo move once per session. On top of that, what are the mechanical differences between a combo move and a regular action. I'm not sure if I'm just missing where that's written or if it's left vague intentionally. I really like the idea and would like to see more of how it works. 

Lastly, I think some work linking together the mission setpieces to one another in the narrative would be nice. I like the idea of moving between stages and how that evokes the old fighting game nostalgia. And I know that a lot of those games only put cursory efforts into explaining why you suddently walked into the mall. But as this is a TTRPG and the goal is to tell a cool story, I think fleshing that out would go a long way to giving your players something to chew on when they're making decisions.