This addon contains separate files that can be used to add this as a unique weapon in your custom campaign.

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To do this:
1. Open the vpk and find the files labeled 'snake' in the models folder and copy / paste them to your addon's model folder.

2. Copy / paste the full materials folder into your addon as well (these files don't override existing files).

3. Go to scripts/melee and copy / paste the 'snake' file.

4. Add the following line to melee_manifest.txt
"file" "scripts/melee/snake.txt"

5. Add 'snake;' to the 'meleeweapons' parameter in your campaign's mission file.

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That's it, now it should have a chance to spawn in all spawn points marked 'any'.