ONE PUNCH MAN: A HERO NOBODY KNOWS

To unlock this achievement you need to fill the "Bond Meter" of 5 heroes which you encounter throughout the campaign's missions and subquests.

How to Find Bond Meters


How to Find Special Missions


Progressing through the campaign main missions raises the bond level of most heroes as well as doing the Special Missions will be the fastest to unlocking the achievement. Once you've done this 5 times, you'll unlock the achievement!

Notes
I unlocked this in Chapter 9, with 2 heroes with max deepened bonds from doing the campaign and 3 hero from doing extra 2 special missions.
• Tank-Topper - Shortly after completing Chapter 4
• Handsome Kamen Amai Mask - Shortly after completing Chapter 6/7?
• Watchman Dog (2 Special missions)
• Mumen Rider (1 Special mission)
• Metal Knight (Chapter 9 & 2 Special missions)

The achievement isn't clear when saying just "Deepen bonds with heroes", the achievement actually requires you to fill the "Bond Meter" which is the meter with the heart inside it when completing a quest or sub-quest with a hero. Once that meter has been filled to the top it should blink yellow, meaning it has been filled. Do this 5 times and congratulations, you have unlocked "I Need Your Help" for 10G

Happy Hunting!
' Awill '