Despite a number of well-crafted elements, the success or failure of The Martian absolutely depended on Matt Damon’s performance in the lead role. It’s true that, in contrast to spiritual predecessors like Gravity and Castaway, the film was not a one-man show, instead featuring a murderer’s row of stellar supporting players. What’s more, its narrative thrills were not limited to its protagonist’s adventures on Mars; The Martian told an equally compelling story of what was happening back home.
But Damon’s Mark Watney, and his lonely trials and tribulations on a desolate planet, were the lifeblood of the film, commanding the lion’s share of its run time and focus. That meant that for much of the movie, Damon alone had to convey his character’s distress, his resolve, his humor, and his humanity, with no one but the camera to talk to. And despite that handicap, he succeeded with flying colors. Few major roles share the degree of difficulty of Damon’s here, where the main character spends much of the film in solitude, with little in the way of major plot developments or action to maintain the energy of the picture, and the performance Damon delivered with that backdrop more than lived up to the challenge.