Survive?
Disappoint Denethor.
Resist the ring is a pretty big one.
Ranger-ing? Boromir's gear seems more suited to open field warfare than tracking and guerilla fighting in a forest. It's literally impossible for a handful of warriors to stop an army, but it's still a crucial job to scout, harass and delay them. Now it's possible that Boromir had the skills for that, but Faramir proved that he was both a capable ranger, more traditional fighter and commander at Osgiliath. And IIRC he was somewhat better at resisting the ring, too.
The classic answer is 'suck and die' but yeah, resisting the ring was kind of a big one.
In the books at least, I believe he resisted the temptation of the Ring better
The fact that he let Frodo and Sam go with the Ring to complete their quest (in the movies as well) shows that he could resist it better than Boromir.
