They went north, through grasslands and swamp, then turned around and through the orchard. The final confrontation ended up being around the river canyon.
At one point they concocted a plan to lure the rivals into a kill zone and get rid of them with artillery (they had a Barbarossa) to remove them without a direct fight. They started discussing their supposed plan to lure the Hulk on open channel to draw them in. but the other hunters just resorted to switching off their transponders and sneaking up on the party when they were preparing.
After they reduced the creature to 1 structure and 4 hp, it borrowed underground and started running away from the combat zone. The day was saved, by a Swallowtail with Lotus Projector, who managed to snipe it for those last few HP.
Once again thank you for this adventure. I'll sure borrow some of its ideas in my future campaigns.