MovementLeft stick

Tilt the left stick a little to move slowly and all the way to move quickly.
The faster you move, the easier it will be for enemies to spot you.

Basics of Infiltration
You will be at a distinct disadvantage if the enemy spots you. Move as stealthily as you can to ensure you are not discovered. Enemies also respond to noise.

Change Stance button

The lower your stance, the less likely it is that you will be spotted.
Use the left stick to move in any stance.

姿勢変更

Cover

遮蔽物の向こうを狙う

Aiming from cover

Approach an object to stick to it and conceal yourself.
You can even move along the object while staying hidden.
While behind cover, hold the Ready Weapon button to pop out and take aim (only if the cover allows).
Release the button to return to cover.

Hanging

Lean over a cliff edge or other ledge to grab and hang off it.
Use the left stick to move while hanging.
Climb back up with the button.
Let go and drop down with the button.

エルード

Hanging

What to Do When Spotted

Enemies that spot you will notify their allies by shouting, calling on the radio, or other means.
Take the appropriate action for the situation, such as eliminating the enemy, fleeing, or hiding.
If a battle is underway, reinforcements might still show up even after you eliminate the initial enemy.
If you give enemies the slip, they will spend time carefully searching the area where they last saw you.

Reflex Mode
The moment you are spotted, the action slows down (Reflex Mode), and you can press to point your weapon at whoever spotted you.
If you neutralize whoever spotted you while Reflex Mode is still in effect, you can prevent them from notifying their allies.

Quick DiveLeft stick + button

Perform a quick dive in the the direction you are tilting the left stick.
This is useful for evading enemy attacks or their line of sight.