Karaoke Revolution

Once you complete 40 gigs in career mode, you will earn the Zombies items. You can see your unlocked items from the Main Menu> Options> Extras> Unlock Progress.

For the achievement, from the menu select "Venue", then "Edit Venue", choose new or edit.
In "Stage Props", choose "Backdrop" and pick the Zombie item, then choose "Stage Center" and pick Zombie Hands item. Play any song (Custom Play) in this Venue and the achievement will unlock.