Protect This House

Protect This House is a Halo 4 achievement added with the Champions Bundle. It is awarded when the player, in Bullseye DLC matchmaking, performs an assassination on the enemy ball carrier within five meters of the goal in a Riochet gametype. It is represented by the Gravball in front of a combat knife and a number "5" next to it.

Tips
Players can slightly increase their chances of unlocking the achievement by utilizing the Stealth support upgrade. Stealth decreases the player's movement noise and visibility to Promethean vision, but more importantly, increases the speed with which assassinations are performed, thus decreasing the odds that the player's assassination will be interrupted. Stealth is unlocked by completing the Wetwork specialization.

Trivia
The achievement's name is a reference to the motto of the sport clothing and accessories company Under Armour.