Armored Core Wiki

Hold Defense Line is a mission in Silent Line: Armored Core


Requester: Kisaragi

Advance: 0

Upon success: 30000c

Operation Area: Dim Forest

Enemy Forces: Mobile MTs (Unknown Number)

Objective: Halt Crest's advance

Operation Code: Guardian

Client Name: Kisaragi

Place Name: Dim Forest

Start Time: 17:30

Security Level: 2

Estimated Success Rate: 57%

Recommended Raven Rank: -


Its just been confirmed... Crest is preparing to launch a major assault across the Zanar River in hopes of seizing territory from us. Our situation looks grim.

Kisaragi lacks the resources to keep up with the redevelopment pace set by both Crest and Mirage. As it stands, simply holding onto the few gains we have made, has been difficult enough.

Sensing our predicament, representatives from Crest approached us with an offer to join forces. We of course refused, at which point we were told in no uncertain terms join or be destroyed.

We must take action. With your help, we'll establish a defensive position along the river's edge and halt Crest's attack. The line must hold, Raven.




Emma: "Enemy targets sighted."

Emma: "Take them out."

Commander: "Listen up! The enemy is on the move, hold your positions!"

Trooper: "I'm hit..."

Commander: "Ahhh..."

Trooper: "Gwuaah..."

Emma: "All allied units destroyed. It's up to you Raven."

Emma: "They've broken through. Mission failed."


Funds: 15000c


This is a rather straightforward mission, you have to prevent all of the enemy MTs from crossing the defense line. Usually they will spawn at the very end of the map border straight forward from where you spawn. You can hire Squad A and let them take short work of all the enemies or stay within the border area and pick off enemies that approach. Those MTs fire rather potent plasma cannons, so try to dodge their shots. But aside from that, they are relatively weak and can be put down with moderately powerful weapons.


  • Can obtain right arm part MWG-XCD/70. You need to save all friendly units.
  • Can obtain back part KWC-HZ120. You need to finish mission with 90% AP and under 3 minutes.