Crouch

Crouching is a mechanic that appears in the Resident Evil series, more so the modern Resident Evil titles.

From Resident Evil 4 to 6
While crouching does appear in these games, it is only very limited to cover and some abilities, and is quite stationary at that. Otherwise, it is not used in any other capacity outside of defensive purposes.

In Resident Evil: Revelations 2
Starting in Resident Evil: Revelations 2 and onwards, crouching can be inputed by a designated button, and is not limited to specific scenarios anymore. Crouching allows the player to sneak around certain enemies, albeit at the cost of speed when doing so. In Revelations 2, there are specific abilities that can boost the player's character when they do crouch, such as Crouch Power, Crouch Dodge and Crouch Advantage, the latter of the three being available in the campaign.

In Resident Evil: Umbrella Corps
In Resident Evil: Umbrella Corps, crouching returns as a gameplay feature, albeit heavily buffed from the previous titles. While there is no stealth in Umbrella Corps, crouching can be used to shorten the hitboxes of the player character, and even allows the player to move at a speed almost identical to the base running speed.

In Resident Evil 7: Biohazard
Crouching returns again in Resident Evil 7: Biohazard, albeit this time, it has been brought back to how it was akin to Revelations 2. Crouching is, once again, a slow stealth mechanic that also functions as a way for Ethan and other playable characters to move around in crawlspaces scattered around the game, and move underneath some objects. Crouching is also very useful against certain attacks from enemies and bosses, and is even part of an achievement in the game.

The crouching speed in this game can be buffed by equipping the Walking Shoes.