Get to the construction site in the "Grand Theft Aero" mission by using the Dodo to either land on the construction site itself or flying to Staunton Island and getting to construction site territory
Kill 20 cops, 3 SWAT members, and blow up 10 cars while having a 4-star wanted level in Portland outside of a mission before beating the "Last Requests" mission
Kill 20 FBI agents and blow up 5 cars and 3 helicopters while having a 5-star wanted level in Staunton Island outside of a mission before beating the "A Drop in the Ocean" mission