This guide will explain how to get the 8 achievements in Hell mode.
Take note that, in order to get all achievements, you need to have finished all three chapters and have access to all 5 underground stages.

Tip: I highly recommend you focus your effort into leveling up the 2 Super Jajas.

This guide will be split into 3 sections:
- Grinding and Option Achievements
- Secret Room Achievements

The grinding achievements basically only require to to grind in the game.
They are as follows:

• 1: Level up Red Jaja to max.
  
• 2: Level up Blue Jaja to max.
  
• 3: Go to the game options and set the BGM to retro.
  Then, enter Scene 3 of the underground, and get to at least the boss to unlock this.
  
• 4: Max out Jajabank by collecting coins. Once done, go battle Super Enma (boss of underground scene 3). In the second phase of the boss battle, Jajabank will join you halfway in the epic battle.

There are a total of 4 secrets to be found scattered in the stages.

The stages of interest are:

• 5: Chapter 3-6
  
• 6: Underground Scene 1-2
  
• 7: Underground Scene 2-2
  
• 8: Underground Scene 3

---

In chapter 3-6, go completely to the far right at the bottom of the stage.
You will walk through the wall and reach the secret room for your achievement.

---

In underground scene 1-2 (latter stage), go completely to the far left at the bottom of the stage.
You will walk through the wall and reach the secret room for your achievement.

---

In underground scene 2-2 (latter stage), go completely to the far left on the middle platform. Drop down from the furthest, making your character drop into an invisible platform in the dark area of the stage walls. Keep walking left, you will eventually reach the secret room for your achievement.

---

In underground scene 3, go completely to the far right at the bottom of the stage.
You will walk through the wall and reach the secret room for your achievement.

With this, you're now done with the Hell Mode specific achievements.

Hint: Another achievement that is not part of this list can be done at the character select screen of Hell mode: Simply enter the Konami code (up, up, down, down, left, right, left, right).