Carrying the Gnome from Chapter 1 (or Chapter 4 in some versions) to the finale can summon the original L4D1 team to help or unlock a special "Gnome Stick" weapon.
To avoid potential security risks, it is highly recommended to install the campaign through the Steam Workshop: Cambalache 2, which handles installation automatically without a password. Cambalache 2 l4d2 cambalache 2 password install
Entering the correct password (found later in the campaign's finale) near the start of the campaign can unlock a powerful Sledgehammer weapon. 🛠️ How to Install Cambalache 2 Carrying the Gnome from Chapter 1 (or Chapter