That's A Knife

That's A Knife

Halo: Reach

That's A Knife is an achievement in Halo: Reach.^[1] To unlock this achievement, a player must perform an assassination on an enemy.

Tactics

The easiest way to get this achievement is to play a Forge game with another person, have him stand still, and perform the assassination.
You can also play Nightfall, as the first few enemies you encounter are an Elite and two sleeping Grunts. Any of the Covenant idling there may be eliminated with ease.
You could also do this in conjunction with the If They Came to Hear Me Beg achievement.
Another easy way to get this achievement is to assassinate one of the sleeping Grunts on Corvette.

Trivia

The name of this achievement references dialogue from the film Crocodile Dundee.

Sources

^ Halo: Reach Firefight at Comic Con

v • d • e Achievements in Halo: Reach (list)

Campaign	The Soldier We Needed You To Be • Folks Need Heroes... • Gods Must Be Strong • A Monument to All Your Sins • We're Just Getting Started • Protocol Dictates Action • I Need a Weapon • To War • You Flew Pretty Good • Into the Howling Dark • Dust and Echoes • This is Not Your Grave… • Send Me Out... with a Bang • They've Always Been Faster • Two Corpses in One Grave • Your Heresy Will Stay Your Feet • Banshees, Fast and Low • If They Came to Hear Me Beg • Wake Up, Buttercup • Tank Beats Everything • Lucky Me • KEEP IT CLEAN • I Didn't Train to Be a Pilot

Firefight	Crowd Control • Knife to a Gunfight • Score Attack • Firestarter • Blaze of Glory • Heat in the Pipe • Game, Set, Match

Multiplayer	Be My Wingman, Anytime • Skunked! • What's a Killing Spree? • Yes, Sensei

Noble Maps multiplayer	Both Barrels • Cross-Mappin' • Offensive Driver • Poppin' & Lockin' • Totally Worth It • You Ate All the Chips • You Blew It Up!

Defiant Maps multiplayer	Candy from a Baby • Crackin' Skulls • Return to Sender • All Alone • Don't Touch That! • Paper Beats Rock

Anniversary Maps multiplayer	Top Shot • Emergency Room • Stick it to the Man! • Dive Bomber • License to Kill • Bounty Hunter • From Hell's Heart

Training	Doctor, Doctor • That's a Knife • I See You Favor a .45 • An Elegant Weapon… • Swap Meet • A Spoonful of Blamite

Player experience	Make It Rain • A New Challenger • The Start of Something • An Honor Serving • A Storage Solution • Make it Drizzle • Cool File, Bro • Lemme Upgrade Ya • One Down, 51 to Go

Tactics

Trivia

Sources

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