Current
Capture the outpostI built this last Christmas as a Craftsmen Secret Santa present for Angear. The save resurfaced a couple of days ago and I added to it and fixed some things. I then thought about posting it on the forums.
The rebels have made a tunnel to the government military base. As the soldiers find out the rebels are digging under the watchtower they set up some forcefields around the tunnels, but they can only keep them up for 30 seconds....
Pictures
Overview of the whole area, the red is where the rebels spawn at first.

The watchtower. When captured the blocks in front of it explode to open up 2 more ways out of the rebel spawn.

The gatehouse with its turret emplacement.

Gatehouse interior. Until it is captured the soldiers spawn here and when it is the rebels spawn there.

The main area which holds 4 CPs: The Infirmary, The Armory, The Soldiers' Quarters and The Courtyard. All of these have their own spawns and can be captured in any order. Once all are captured the last CP opens up.

The infirmary interior. On the balcony there is another turret emplacement.

The armory and its turret emplacement. The CP is on the inside on the first floor.

The soldiers quarters and another turret emplacement. The CP is located just outside of the quarters.

The courtyard in front of the headquarters. The only main area CP that does not have a turret.

The interior of the headquarters with its CP. Once it is captured the soldiers lose the game. And in a way the rebels do, too...
I host this sometimes when I feel like it. I might get some action screenshots up the next time I do though.