The game is good, but the MC took too well to the "Blackmail" issue. If there was some way to have the MC at least show that he is pissed off more than just "Oh well, what can I do" it would make the situation easier to swallow. That or an alternate "route" to agree not to say anything but not join the gang just out of principle (you know because they are "better" than killers but not enough to try to control a 19 yo boy's life that they already confirmed did not attack and tried to save a girl's life).
Personally I don't like characters that are too emotional and crash out due to that.
I'd say the MC's reaction was pretty realistic for someone who can assess the situation they're in, calm and collected. You know how potentially dangerous they are. But if they mean well, complying wouldn't be the worst option.
I for sure would've been the same.
Easy to say without being in the situation yourself. I appreciate your thoughts though. I just think that being presented with a blackmail situation would not lead to immediate and unconditional compliance. Most people would consider how to better their situation and get out from under blackmail in many different ways. Granted, this is a story, with a need to move the plot forward, but even an ounce (whether it mattered or not) of defiance at being blackmailed is what I would expect of a lot of people, not total compliance.