GTA V/Grand Theft Auto 5 Final Mission PC Gameplay. Watch me play the last mission on Grand Theft Auto V on PC at full hd. In the last mission called 'The Third Way' the user must choose between killing Trevor, killing Michael or a third option named 'Deathwish'. See the complete video walkthrough for the final GTA V mission on PC here! Grand Theft Auto V is an open world, action-adventure video game developed by Rockstar North and published by Rockstar Games. It was released for the PC on 14 April 2015.