IAD backwards + FD = he cant hit you and it doesnt matters if he/she Frc the doors, he/she cant do it forever, so if you see he hides under the blanket and has no tension to FRC, Block it and punish Faust.
If Faust is gonna rush, try doing HS Carcass Ride/Dark Angel, that should stop him.
Dont let him/her pressure you, instead try to go for a knockdown, and the make a simple ball formation (k + p) and pressure him/her.