Unknown ships have crossed the Line and are firing on our fleet. They hit bases and shipyards first, and nobody knows what they want. Somewhere in the noise, a pilot is calling for help.
Completing the volume unlocks the Bulwark, flown by Henrik Larsen. Read about the Bulwark.
Missions
5 missions, then a free play mission: Endless waves of every enemy of this volume, in a different mix every wave. How far can you get?
Mission 1: Awakening
Unknown ships have crossed the Line and are firing on our picket at Jupiter. Hold them here, or they reach Mars.
Target: wave 10. Enemies: Drone. Bosses: Drone boss.
Mission 2: Defend the base
Some Intruders slipped past the picket and are over the Mars fleet base. They go for hangars and fuel first. Protect the base.
Target: wave 15. Enemies: Drone. Bosses: Drone boss.
Mission 3: The shipyard
The Intruders are after the shipyard, the only place that can build more ships. Fight across Mars and hold the yard. Collect any data cores they drop.
Target: wave 25. Enemies: Drone, Interceptor. Bosses: Interceptor boss.
Mission 4: City defence
The Intruders have reached Earth. A coastal city is being evacuated. Race over the countryside and hold the sky over the port.
Target: wave 35. Enemies: Drone, Interceptor. Bosses: Interceptor boss.
Mission 5: Signal in the static
The signal comes from the old Phobos dock. Leave orbit, cross the debris ring and reach the dock. The Intruders are trying to cut something out of it.
Target: wave 50. Enemies: Drone, Interceptor, Gunship. Bosses: Interceptor boss, Gunship boss.
Unlocks the Bulwark.
Enemies
Stats are for wave 1. They grow every wave, so a later wave hits harder than what you see here.

Drone
Attack 1 every 1 s (1/s) · XP 50

Interceptor
Attack 2 every 2 s (1/s) · XP 60

Gunship
Attack 3 every 3 s (1/s) · XP 100
Bosses
One boss on its own every fifth wave. Its stats are at wave 1 as well.

Drone boss Boss
Attack 2 every 1 s (2/s) · XP 250
A bigger drone.

Interceptor boss Boss
Attack 4 every 2 s (2/s) · XP 300
A bigger interceptor.

Gunship boss Boss
Attack 6 every 3 s (2/s) · XP 500
A bigger gunship.
Spoilers: what the pilots find out
Awakening. The Intruders crossed the Line without warning or demands. A faint signal on an old fleet channel repeats under the noise.
Defend the base. The Intruders went for our hangars and fuel, and passed over the barracks. They are not trying to kill everyone.
The shipyard. The Intruders scan every hull they pass, as if hunting for something. Their data cores are in no language we know. A call sign came through the static: a Bulwark tank, missing for three weeks.
City defence. The Intruders searched the city and left the people alone. They are looking for ships, not people. The call sign comes from the old Phobos orbital dock.
Signal in the static. The Intruders did not try to kill the crew. They tried to take the ship. They want our hulls as much as our fleet.
Clues
- A faint signal. Under the noise on an old fleet channel, a voice keeps breaking up: "dock... still...". Someone is alive out there.
- They spare people. The Intruders went for hangars and fuel and flew over the barracks. They are not trying to kill everyone.
- Hull scans. They scan every hull they pass, as if hunting for something. Their data cores are in no language we know. A call sign came through: a Bulwark tank, missing for weeks.
- They want our hulls. The Intruders spent weeks trying to cut the Bulwark out of the Phobos dock. They want our ships as much as our fleet.