He has a good design against kinetic weapons but against thermo
based weapons, he is in deep doo-doo. Connect a few tanks of liquid
nitro and a few tanks of LPG in the path of the dozer and away from
each other by a few metres with detonators and blow them up. The
steel plates will warp or even break, now the sharpshooters can get
at the soft interior.
As for using limited resources to kick Mountain Park's arse, Marvin
is the super-commando in my books.