Winter 2018 Event/E-1

Introduction
E-1 is composed of 2 parts:
 * Phase 1: Unlock the boss node by A-ranking certain nodes.
 * Phase 2: Defeat the

This map does not allow the use of submarines or standard carriers. However, you may use CVLs instead.

Unlocking the boss node
To unlock the boss node, you have to clear a certain amount of nodes with at least an A-rank:* Node B* Node F* Node K (only confirmed on Easy)* Node NOn Easy, you are only required to clear 2. On Medium and Hard however, you are required to clear at least 3.