Isomer E3-B1: Shark and Sea Battle I EX

Possible Drops:


 Mission and Clear Conditions:

Mission: Capture Command Post

Clear Guide:

Team Recommendations: 

  • 2 Combat Echelon, 
    • 1 RF Squad to fight some Doppels, 1 AR to fight a Smasher. 
  • 1 Dummy Echelons

Clear Steps

Let’s get this out of the way. Yes, you can in fact, destroy the Rubble with a HOC. However, it has 9,999 HP, and BGM deals Damage equivalent to Peirce. That means that even a level 100 BGM with maxed, or near maxed Chips is going to need over 10 shots to destroy the Rubble. That is at least 1500 Ammo and Rations to kill that rock. For a slightly shorter clear is that price really worth it?

The difficulty spike makes a few changes to this map. Firstly, you now will need to fight some Doppelsoldners, as well as bait one out of the way. Second, the Smasher at the end actually needs to be fought. It’s an easy fight, so don’t worry. Other than those considerations, this map isn’t overly challenging and doesn’t have any odd mechanics of note. 

Turn 1


Deploy a Combat Echelon on the Command Post, and the left Heliport. Deploy a HOC on the Heavy Heliport.

Move the Left Combat Echelon up three nodes.


Move right Combat Echelons up three nodes. 

Turn 2


Move the left Combat Echelon up three nodes, to the Console. Activate it, and open the Gate.


Move the upper Combat Echelon back down two nodes.


Move the central Combat Echelon left one node, and down two nodes. 

Turn 3


Move the left Combat Echelon left one node, down one node, left another node, and then up the left side of the map five nodes, to fight the Smasher. 

Video Guide:

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About the Author(s)

aka Soulmuse basically everywhere. Discord: soulmuse#8741.

Guide writer for Girls Frontline. KSG and G3 Propagandist. Writes the occasional fanfic.  

Feel free to send guide suggestions and feedback via DM on Discord or Reddit. You can also find me in the GFL section of the community discord. Also on twitter