From Hell's Heart
From Halopedia, the Halo wiki
From Hell's Heart is an achievement in Halo: Reach multiplayer matchmaking added with the Anniversary Map Pack. It is awarded for killing an enemy player that stuck you with a Anskum-pattern plasma grenade with their own grenade in a matchmade game. The achievement only be unlocked on an Anniversary map.
The achievement's name is a reference to the novel Moby-Dick. After stabbing his nemesis, the eponymous whale, with a harpoon, Captain Ahab yells, "...from hell's heart, I stab at thee!" He is then dragged underwater by the whale and drowns with it. The second part of the quote was referenced in the Halo 4 achievement I Thrust at Thee.