All 4 One is for version 1.4/1.5. It has 3 maps and the file name is all4one.zip. Load them as user maps. It was released on July 17, 1997.

All 4 One is 3 good dukematch maps converted for single player use. The maps are Beirut 2, Isle, and The Rock.
The first map I played was Beirut 2. It did a good job recreating the feeling of being in a war zone, in a bombed out city full of snipers. It took me 30 minutes to finish.
The Isle starts off on a ship docked/stranded on a small fortified island. You will need to make your way into the main complex below. This one also took about 30 minutes to finish.
The Rock appears to be based of the prison on Alcatraz Island. It's another good map.
All 3 maps were well done. They get hard at times but not too hard. I rate this Pak as good with 3 out of 5 stars.

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