Half-Life 2 Zombie Chopper Achievement the easy and fast way

Enable developer console

 
>open options 
>keyboard 
>advanced 
>enable developer console 
 
 
 

Start a new game

 
>new game 
>chapter 6 “we don’t go to ravenholm” 
>start new game 
 
 
 

Change level

 
>open up console using ` (~) 
>paste this into the console 

You should get the achievement now

 
>after getting out of the tunnel you should obtain the achievement 
 
>well that’s all, hope i helped 
 

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