You should really ask peoples permission before you just throw their robots in a contest...

Nevertheless, tactics:

Ill go for Seung Mina first, Im smaller than she is and have 2WD to her 4, so I should be able to outmaneuver her and get around the side, and use the forks and claw to grip on to her and drag into the pit. Once thats done, hope one of the others distracts SHA enough for me to get in and go for the tracks - if I get the crusher in the right place I can snap one off easily and render them useless.