As this is a survival game so you need to use the multiple resources to survive and progress in the game. These resources are the health and also the combat. Combat further includes melee, hand combat, and also the use of different weapons. You can also upgrade them and use them during the fight with enemies.
In this guide, we will discuss how the Weapon system works.
How to Shoot Simple Fire and Alternative Fire:
There are two fire types that you can use during the fight with the enemies. One is the simple fire and the alternative fire. To use simple fire you need to press LT to aim at the target and press RT to shoot. For the Alternative Fire, you need to press the LT to aim and R1 to shoot. There is also System AI shooting which is by default appears as a mark on the enemy. When you see that mark shoot then use LT to hold and shoot by pressing R2. To use the alternative fire you need to upgrade the weapon and using an alternative attack costs you extra bullets.
How to Reload:
When you see your weapon is out of bullets. You can use the Square Button to quickly Reload your weapon.
How to Swap and equip guns via Menu:
As you progress in the game you will be able to unlock the items within time. You can see those items in your inventory by pressing the D-Pad and then using the X button to select the specific item. You can also quickly swipe the items by clicking the right D-Pad.
How to Upgrade:
You can upgrade all your weapons in The Callisto Protocol. As you progress in the game you will be able to collect different parts of the weapon. Which you can use to upgrade your weapons at a Forge. A forge is a printing machine in Callisto Protocol through which you can upgrade the weapon. It will also cost you money that you can get from the chests. Upgrading the weapons also increases the damage of the gun. Although it will not change its appearance.
This is how the weapon system works in The Callisto Protocol. I hope this guide will help you.