This map has a discussion topic which can be visited here

2-4 player map.

mission : protect "Joe" the friendly rat at all costs.
once all enemys have been killed take joe to the yellow arrow of mystery for next part of level to open up

joe is just like barny when following except slower.

also dont kill joe or map ends,

aslo the window that u start next to can be broken but dont as the enemys might get in and kill joe.

please rate