The Slide Combination Is Shift + C
The official Scream And Run listing publishes Shift + C for Slide. It lists Shift for Run and C for both Crouch and Crawl.
To check the slide input, try Shift and C together while moving, then compare C without Shift. This is a practical way to distinguish the combination from the C actions. The official description does not specify an exact minimum speed, timing window or cooldown.
Troubleshoot One Input at a Time
If you do not get the expected action, first confirm that the game has keyboard focus and that you are testing the PC controls. Release the keys, test the run input separately, then try the combination again. These are general input checks, not evidence of a particular game bug.
Do not infer a fixed slide distance or an immunity window from the key combination. The collected official source also does not confirm whether a flashlight can be toggled during every slide animation.
Use the Right Guide for the Question
A control list tells you which input is assigned, not which obstacle is passable or which monster can follow. For those questions, consult a guide or recording for the particular map and compare it with the current round. Avoid assuming that a successful slide shown in one clip establishes a safe route everywhere.
How is slide different from crawl? The published slide combination includes Shift; the published crawl key is C. The source does not fully specify the interaction between movement state and posture.
What is the controller combination? No equivalent has been verified in the collected official material. Check the prompts shown on your device.