Recognize the gas attack
The Pusher wears a gas mask and carries a fumigator and gas tank. Listen for an Insertion Gate alarm, his speech and the pressure sprayer. His gas drains sanity and can trigger Psychosis, bringing the Skinner Man after you.
Move away from his approach before he reaches you. Use darkness and solid obstacles to reduce ordinary detection, and avoid unnecessary noise. If he has already seen you, keep moving toward a route with room to escape instead of waiting beside the gate.
Avoid the spray, then recover
His gas affects an area. Avoiding the grab alone does not prove you are outside the spray. Create distance from the attack rather than using a last-second jump as a guaranteed counter.
If you lose sanity, use an Antidote after making enough space to use it safely. A Heal Rig with the level 5 Detox upgrade also cures Psychosis; the unupgraded Heal Rig is not a substitute for that upgrade.
During full Psychosis, keep escaping the Skinner Man while reaching your remedy. Make space before stopping at a stationary objective or using an item.
Do not follow him back
After spraying, the Pusher can retreat toward an Insertion Gate. Stay out of his return path: he can hit a Reagent blocking it. A retreating animation is not an invitation to stand in front of him.
Variators can alter how frequently he appears. This guide covers recognition, avoiding the gas and recovery; it does not promise a fixed spawn timer, spray radius or invulnerable counter window.