Earn an "A" rank in all missions in the indicated episode to unlock the corresponding emblem.

Crescent Moon: Episode 4
Danger: Episode 9
Dark Rider: Episode 12
Fefnir: Episode 8
Fenrir: Episode 5
Milicona: Episode 13
Necron: Episode 14
Nineball: Episode 2
Pink Cat: Episode 3
Rave: Episode 11
Unknown: Episode 6
Shadow: Episode 10
Silver Wolf: Episode 7
Sledge Hammer: Episode 15