10 Video Game Side Quests That Impact The Main Story In A Major Way
3. For Auld Lang Syne - Fallout: New Vegas
The companions in Fallout: New Vegas are some of the most memorable characters in the entire series. Whether it's the depressed NCR sniper, the cybernetic dog, or even the super mutant granny, each and every one of them has a well-developed backstory with something unique to offer.
The same goes for Arcade Gannon, the snarky doctor from The Followers of The Apocalypse. Though he may not look extraordinary on the outside, the man is actually an ex-member of the Enclave, the remnants of the old US government. In fact, if your affinity with Arcade is high enough, Arcade may even help you recruit his old Enclave buddies to aid you in the final battle at Hoover Dam.
The quest "For Auld Lang Syne" is a special companion mission that lets the player use Arcade's old connections to turn the tide of New Vegas' pivotal battle to their liking. The quest is entirely optional, but if you manage to complete it, Enclave's rementants will actually show up at Hoover Dam and completely annihilate your enemies with their Vertibird and high-tech weaponry.
It's good to have friends in high places. Especially if they can reach those "high places" in a Pre-War Vertibird.