Chapter 17: The Final Choice, Part 2 is the second part of the penultimate chapter of Valkyria Chronicles 4. The combat mission in this is Battle Aboard the Cruiser.
We need to catch up to Forseti before it's too late
"He's trying to get to Angie in the restricted area. The enemy's already in the engine room, so it's too dangerous to go in from the front. But if we take the stairway, we can catch their flank from the side. It might not look like there's a path, but we can use the air ducts. Remember, Operation Cygnus can't succeed without you. Be careful, okay?"
Location: Centurion, Engine Room
Description: Forseti has infiltrated the ship, so get Claude to his target without falling into critical condition or coming too close to Nikola. Use the pressure gauges and steam valves to create cover in the engine room.