Make other people's lives shit as well.
Go out and get help, at this point, I couldn't care less what you do with yourself and whether you end up doing the deed or not.

That is more or less what I would say.
And then I would block him everywhere and let everyone know who he is and why I did that.

If I was in that situation tbh, even if it seems mean, at that point the guy can go and shoot himself, I couldn't care less.
And his friends can go fuck themselves as well.
Your happiness is NOT my RESPONSIBILITY, nor is it my PRIORITY.
Just because yourblife is shit, doesn't mean that you should-