Well... lets see.......
Primary: Gundam Exia. dont care what you think, Im not ditchin my gundams just for you. besides, how can you not like the Trans-Am system?
Secondary: A good Caster with plenty of ammo. Go ahead, try to dodge it.
Emergency: A fully functional Guyver suit. Cause if they can get past the Gundam and the Caster, the Mega smasher should hpfully do the trick. That and hidden Bio-armor is just bad@$$.
GUYVER!!!(Poof! Instant Bad@$$.)