LOL Mega Fist

That first knife stuff was a ****ing crock of ****.

Oops. Was that a bit harsh?

Sorry, but somebody advancing holding the knife up and letting you bend down with some bs two-handed grab with your body right in front of it at arm's length, is going to get you killed. No look at controlling the knife-hand, moving your body out the way on the way in to wrapping and attacking the assailant. I've seen more realistic aikido knife defences At least they get your body out the way and then back into a range where you can wrap it.