The Katyusha was contributed to the Steam Workshop.
Main article: Paint Can
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- The Katyusha was added to the game.
- [Undocumented] Added the Katyusha to the Mann Co. Store.
- [Undocumented] Added Strange quality.
- The item's name and description refer to the Tupolev ANT-40, a Soviet bomber often nicknamed "Katyusha."