Another couple of tactics from StephenHK over on the PlayGM forums!
He's recommended that these are for stronger teams, and you'll see why. They are very heavily focused on outscoring the opposition and just overwhelming them.
Kung Fu 2125 - For Top Teams - Man City/Liverpool/Real Madrid/Barca
MCs - Close Down More
AML/R - Shoot Less Often, Get Further Foward, Stay Wider, Mark Tighter
STL/R - Tackle Harder
STC - Pass It Shorter, Shoot Less Often, Close Down More Often
Kung Fu 4123 DLP - For Top/Sub Top Teams
Kung Fu 4123 DM - Same as above but better defensively
I haven't been able to really test these at all. Did plug in the 2125 and by god it done some amazing stuff. You do need to have some pacey defenders though.
WBL/AML takes right corner
WBR/AMR takes left corner
No specific training - training the roles is usually recommended.
For IFs - use opposite foot e.g. AML IF should be right footed.
An example of what to expact with the 2125:
A lot of numbers in the opposing penalty box.
A few games from DorkSirjur using the 2125 with RB Leipzig in his third season. His squad is strong hence why it can work. (Dias and Upamecano are the CBs)