Shutdown when used with its gametype Invasion:Shutdown is an Invasion Transformation from Condemned to Uplink.

If you want to make your own gametype the formula is:Assault, Territories, CTF.

Elites Attacking
Phase 1-Objective: Bomb the Station from the Repair Bay to
Elites have standard P1 loadouts and gear
Spartans have standard Sprint loadout (AR/Mag) also a Hologram loadout (AR/Mag)
Gated Soft and Hard Kill zones in the center zero-g section for Phase 1

Phase 2-Objective:Control the Central Core
Swords and Shotguns classses are given respectivly.
Do'nt worry about going back to the bomb sites. We've closed that room with 'Small Boxes and Kill balls).

Phase 3-Objective: Capture the Core from Generator and bring it to the Repair Bay for extraction.
All standard Invasion loadouts are unlocked.
Phase 1 Pictures

Above is the Elite Inital Spawn with the Phase 1 bomb under the plane. Backfield Spawns upstairs in the control room and across the bay door by the cannon that goes up the plane. Right at the inital spawn is the Phase 3 capture plate.

Below is the Phase 1 Bomb Destinations

Phase 2 Pictures

Above is a Phase 1 spawn for the Spartans. Also the Phase 2 blockage to the damaged section of the Station.

The Phase 2 Territories as shown below. One large and one smaller inside

The Elites gain a spawn point in Communications near the blockoff below. on the right
for Phase 2, on the right near the bottom of the stairs for Phase 3

Above, the Bomb room shut down ala Uplink. Note I have fixed the teleported spawn issue since I took the screenshot. This is near the spartain inital spawn with one of the spartan backfield spawns not shown and not realized until now.

Phase 3 Pictures

Below is the core to capture. On the left behind the glass is the second backfield spawn for the spartans

The stairway from the Repair Bay to the Generator has been closed off like Uplink

Again the teleporter issue has been fixed.