10 Video Game Speed-Run Achievements Only Hardcore Players Will Unlock
2. Monopolized - Halo 2 (The Master Chief Collection)
The Achievement: "Halo 2: Complete all Halo 2 Legendary campaign missions in under 3 hours."
Halo: The Master Chief Collection contains a brutal achievement for six of the Halo games, whereby players must beat each of them on Legendary difficulty in under three hours.
But Halo 2 is especially difficult given that it offers by far the toughest Legendary campaign in the franchise, and can easily take first-time players 10-12 hours.
The only solace is that you're able to dive into individual levels and better your time in order to meet the time limit rather than having to complete a successful sub-three-hour run in one go.
Even so, this is extremely demanding of even skilled Halo players, largely due to the aggressiveness and accuracy of Halo 2's Legendary enemies. However, there are those few God-tier players who've incredibly managed to halve the par time.