Operation guide: H6-4
< H6-4
| Operation | Guide | Trivia |
The fourth and last Extreme Mode operation of Episode 06, H6-4, titled Operation Cocytus-4, is notably one of the most difficult operations in Arknights where the player is pitted against hordes of Yeti Squadron enemies as well as FrostNova, "Winter's Scar" herself for the second time.