How to Crawl on PC
The official Scream And Run controls assign C to Crawl and also to Crouch. The official text does not explain whether to tap or hold.
Check the posture and input prompts in your current session before relying on a particular tap or hold behavior. The published key list does not settle how these two actions share C.
Check the Action Before Using a Small Opening
A useful practice sequence is to test C while stationary, compare a brief press with a longer hold, then check what changes while moving. Use an open area where you can see the character clearly. This is a suggested input check; it does not establish an invulnerable practice location.
For sliding, the official combination is Shift + C. If you keep triggering a slide when trying to crawl, test C separately from Shift to distinguish the actions.
Limits of the Available Evidence
The official key list does not compare movement speeds or enemy detection. This guide therefore does not promise that crawling is silent, makes you harder to detect, or lets you pass every vent or low doorway.
What is the mobile or controller crawl button? No equivalent binding was verified. Follow the on-screen prompts on your device.
Should I crawl as soon as I hear a monster? That is not a universal rule established by the control list. Choose an escape route based on what is happening in your round; learning the key does not make crawling the correct response to every chase.