Vampire Survivors is a fun roguelike game where you have to survive the hordes of demons who are after your soul. You unlock new characters and collect new skills and upgrades to help you in this ordeal. As a bonus, you can also unlock achievements to show off to your friends, but some of them are tougher to get and harder to understand. Such is the case with the Hidden Anathema achievement, and this guide will show you how to unlock it in Vampire Survivors.
How To Eat As Much As Possible With Gazebo in Vampire Survivors

The requirement for the EXTRA: III – Hidden Anathema achievement is to eat as much as possible with Gazebo. If you don’t have Gazebo in your roster yet, all you need to do is evolve the Gaze of Gaea using the Parm Aegis to unlock the Embrace of Gaia and get Gazebo. Next, you need to locate a level where Gazebo can eat plenty of Floor Chickens. The Coop and To End An Ice Age Chapter 5 are two good levels to pick to encounter tons of floor chickens. Change the game mode to Endless and either Arcanas or Hurry so you can farm floor chickens efficiently.
Next, you need to pick your upgrades, and it is best to go for stats that offer high health and damage. Equip the VIII Mad Groove to help you collect weapons at the start of the level. If you plan on completing the achievement in Chapter 5, then getting the Santa Water, Fire Wand, the Bracelet, or any flame weapon is enough to bring down the Chicken and collect food items. XIX-Heart of Fire is another good upgrade to have, as you can quickly cook the chicken before consuming it.

You can now start the level and encounter waves of chickens running towards you. Use your weapons to attack them so Gazebo can eat them and gain stat points. These points will be randomly assigned to any upgrade, and all you need to do is to keep eating chickens till Gazebo has all its stats maxed out. Make sure that Gazebo is at near full health at all times. You will know you have a maxed-out Gazebo if it doubles in size and you don’t see any stat upgrades appearing over its head. Now, all you need to do is quit the game, and you can unlock the Hidden Anathema achievement in Vampire Survivors.