What does ResetStats do?

It fully resets your skills and perks in KF2. The reset cannot be undone, but your items remain.

Open the console and type ResetStats "your nickname" with the quotation marks.

Which key opens the console?

It depends on your layout. The author uses F3, and on some keyboards it is the key left of 1 (the tilde key).

KF2 Reset Perk Progress with the ResetStats Command

This short Russian-language Steam guide (translated) explains how to wipe your character progression in Killing Floor 2. The reset is complete: all skills and perks go back to the start, there is no rollback, and your items (weapon skins, cosmetics and so on) stay in your inventory. Use it only if you really want to start over. For more commands see KF2 console commands reference.

How to reset

Open the in-game console. The author's console key is F3; on other layouts it may be the tilde key or the key to its left.
Type the following, with your own nickname in quotation marks:

ResetStats "your nickname"

Press Enter. Your perk levels and skill choices are reset.

Before you do it

There is no undo, so be sure.
Only skills and perks are reset. Items remain.
The quotation marks around the nickname are required, especially if the name contains spaces or special characters.

FAQ

What does ResetStats do?: It fully resets your skills and perks in KF2. The reset cannot be undone, but your items remain.
How do I run it?: Open the console and type ResetStats "your nickname" with the quotation marks.
Which key opens the console?: It depends on your layout. The author uses F3, and on some keyboards it is the key left of 1 (the tilde key).