6. d6 is a blunder. You have to challenge the advance Knight with c3
This is what happens in a blowout.

Yes, 6.c3 b5 7.Bf1! is the test of Black's opening.
6.d6 is not a blunder, just a secondrate move. The real blunder is 7.Nxf7?? after which white is totally lost.
9...Bh3? may win, but 9...Bg4 and 9...Qe4+ are much quicker.
White is lost. Instead of black playing bh3 should play Qf4+ . wins the queen or mate with nf4. From the top example

Bh3 wins, but ...Bg4 gets the full house at once.
In #5, the old line is 8.Ne4 when 8...Qh4? is ultimately unsound, but 8...Ne6! gives Black good compensation for the pawn. The problem for Black is the line 8.cd4! Qxg5 9.Bxb5+ Kd8 10.0-0(!) Bb7 11.Qf3 which has been played quite a bit recently, and Black is suffering.

I REALLY want to show my secret line, but no. I can't.
It's apparent that you cannot show something that doesn't exist.

... This has never been played in a whole game that i ever know of. Just Btw.
Yeesh! Not even close to my intention.

Going for a cheapo on g2 does not work: on a direct 10...Nf4 white has 11.Bc6! Rb8 12.de5, while on 10...Rb8 11.Bc6 ed4!? 12.d3 Nf4 the new move 13.Na3! gives white a clear advantage.
Any suggestions????
Edit: Qe4 wins, so dont bother with Bh3.