The Callisto Protocol is one of the newest horror games out right now. It was developed by Striking Distance Studios, which comprises many former members of the Dead Space team. The Callisto Protocol is extremely challenging, offering multiple difficulty modes that can allow you to spend dozens of hours fighting off the horrors of Callisto.
With a game that's difficult, hard achievements usually follow. The Callisto Protocol offers a challenging set of achievements that will take perseverance and patience to earn.
9 I Do Belong Here
In order to earn this achievement, you must beat the entire game. This is one of the rarest achievements in the game for a reason, as The Callisto Protocol is quite difficult, leading to some giving up. The nice part about this achievement is that it is unlocked by beating the game on any difficulty, which makes it considerably easier.
Beating the game can become much easier by playing at a lower difficulty and also upgrading your weapons consistently.
8 You Need A Gun
You Need A Gun is unlocked by fully upgrading one weapon. You must find a Reforge Station in order to upgrade your weapon. In order to reach one of these, you will have to complete the first two chapters of the game. After this point, you will encounter a Reforge Station, which allows your character to upgrade their weapons.
Be sure to stock up on Callisto Credits in order to upgrade your weapons - this is the currency used to purchase upgrades.
7 The Commonality
This achievement is unlocked by exploring and uncovering two secret areas, which allow you to gather certain data needed to fulfill the achievement. You will need to gather Data-Bios 7 and Data-Bios 31. These are located in Secret Room 1 and Secret Room 2, respectively. You will find them in the secret rooms, so they will not be missed once making it to the room.
These two Data-Bios are easy to miss since they rely on special rooms, which can make this achievement easy to miss.
6 Two Heads Are Better Than One
Two Heads Are Better Than One is unlocked after beating Two-Head. This enemy is one of the bosses found in The Callisto Protocol. He is encountered in Chapter Six, in which you must defeat him to progress. When defeating Two-Head, you will earn the achievement called Two Heads Are Better Than One.
This fight can be extremely challenging if you are on a higher difficulty. Especially on Maximum Security, Two-Head can be a real hazard to you.
5 In Striking Distance
In Striking Distance is an achievement that will require you to be lucky. Using the GRP, you will need to grab an enemy and thrust them against a wall. From here, you will have to attack the enemy you just threw with a melee attack.
The reason this achievement requires some luck is that the melee attack must be the killing strike, so you only can hit the enemy once with your melee attack. The best strategy is to throw every enemy you come across against a wall, attack them, and then repeat that - eventually, the killing blow will be one of the melee attacks.
4 Get A Grip
This achievement will require you to grab 25 different enemies with your GRP. The GRP is a weapon that will automatically unlock after finishing the third chapter in The Callisto Protocol. It allows you to grab enemies and float them through the air, which is extremely handy when enemies sneak up on you.
After grabbing enemies with the GRP, you are able to blast them away. This is extremely useful as they can be thrown against a wall or any other area.
3 Giving Back
To earn Giving Back, you must stab five enemies behind the back in The Callisto Protocol. In order to earn this achievement, you must remain crouched and slowly move around, so you do not alert enemies. When behind an enemy, a prompt will appear for you to stab it.
Toward the latter half of The Callisto Protocol, you will start to encounter blind enemies. These are the enemies you should target for this achievement, as it is much more challenging otherwise.
2 The Protocol Is About Life
The Protocol Is About Life is one of the hardest achievements found in The Callisto Protocol. This achievement requires you to play on the hardest difficulty available in the game - Maximum Security. On this difficulty, your health is much easier to drain, and enemies are much tougher to defeat.
The final boss on Maximum Security can be extremely difficult, which might make earning this achievement quite a chore.
1 Grim Reaper
The hardest achievement in The Callisto Protocol is called Grim Reaper. This achievement tasks you with harvesting and reading all the Implant-Bios, as well as the Data-Bios. There are a total of twenty-three Implant-Bios available for you to find throughout The Callisto Protocol.
Although this achievement technically lists only the Implant-Bios in its description, it does indeed require both those and the Data-Bios in order to complete.