Hello Nurse!

From Halopedia, the Halo wiki

Hello Nurse!
Hello Nurse.png
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Hello Nurse! is a Halo 4 achievement added with the Castle Map Pack. It is awarded when the player, in Castle DLC matchmaking, heals a near-death teammate with a Regeneration Field 5 times.[1] It is represented by the Regeneration Field icon with a number 5.


The name "Hello Nurse!" is a reference to a popular vaudeville catcall later re-popularised in the 1990s cartoon show Animaniacs.