By Jay / / Games

Unlocking new heroes is an important part of progressing in My Party Is Grinding. You begin the game with the Knight, but there are four more classes that you can eventually add to your roster: Warrior, Assassin, Archer, and Mage.

These additional classes are not unlocked simply by reaching a certain level. Instead, you need to progress through the Orb Circuit, the growth system that contains different connected nodes. Some of these nodes are tied to class unlocks, so you will need to follow the correct branches and spend Orbs to reach them. This guide explains how the class unlock system works and what you need to do to unlock all five heroes.

All Hero Classes in My Party Is Grinding

There are currently five classes available in My Party Is Grinding:

  • Knight — Available from the beginning.
  • Warrior — Unlocked through the Orb Circuit.
  • Assassin — Unlocked through the Orb Circuit.
  • Archer — Unlocked through the Orb Circuit.
  • Mage — Unlocked through the Orb Circuit.

Knight is the only class you receive immediately. The other four require progression through the game’s Growth system. If you want to complete your roster, you will eventually need to explore different branches of the Orb Circuit and unlock each class node.

How to Unlock New Heroes

How to Unlock All Hero Classes in My Party Is Grinding

The class unlock process is fairly straightforward once you know where to look. You do not need to complete a special quest or defeat a particular boss. Instead, class unlocks are connected to the Orb Circuit. Follow these steps:

  1. Open the Growth screen.
  2. Enter the Orb Circuit.
  3. Look through the connected branches of the circuit.
  4. Find a node that is connected to a class unlock.
  5. Follow the available nodes leading toward that unlock.
  6. Check the Orb requirement shown on the node.
  7. Spend the required Orbs to purchase the node.
  8. Return to the class screen after unlocking it.
  9. Add the newly unlocked hero to your party.

The exact Orb requirement should always be checked directly in your game. Avoid relying on an old guide that gives one fixed number because the requirements can change as the game receives updates.

What Is the Orb Circuit?

The Orb Circuit is the main growth tree used to improve your account and unlock additional progression options. It contains more than 200 connected nodes, creating different paths that you can follow with your Orbs.

Think of it as a large branching upgrade system. You cannot simply purchase any node you want from the start. Instead, you need to move through connected nodes and spend Orbs as you progress along a branch.

Some nodes provide regular upgrades, while others are connected to more important progression features, including new classes.

Because of the size of the Orb Circuit, it is worth checking the surrounding nodes before spending a large amount of Orbs. Planning your route can help prevent you from wasting resources on branches that do not lead toward the class you want.

How to Find Class Unlock Nodes

When you open the Orb Circuit, zoom out if necessary so you can see more of the surrounding branches. Start from the nodes you have already unlocked and follow the available paths. Your goal is to identify the branch leading toward a class unlock.

Once you find one, select the node and check the requirement displayed by the game. This is the safest way to know how many Orbs you currently need. The important thing is not to assume that every class follows the same route. Class unlocks are tied to specific growth nodes, so you need to inspect the circuit and follow the appropriate branch.

Is There a Fixed Orb Cost for Every Class?

There is currently no reliable fixed cost list that you should use for every version of the game. The Orb Circuit contains a large number of nodes, and the exact requirements shown in-game are the information you should follow. If an older guide gives you a specific number for unlocking Warrior, Assassin, Archer, or Mage, check that requirement against your current version before saving up that exact amount.

Updates can change progression requirements or the layout of the growth system. For this reason, the best method is:

  • Open the Orb Circuit.
  • Find the class-related node.
  • Check its current Orb requirement.
  • Follow the connected path.
  • Purchase the required nodes.
  • Continue until the class unlock is reached.

Class Unlocks vs Class Levels

One thing that can be confusing for new players is the difference between unlocking a class and leveling a class.

These are two separate progression systems.

Leveling an existing class improves that particular hero and helps with its progression. For example, increasing the Knight’s level does not automatically unlock Warrior or another class.

A class unlock node, on the other hand, gives you access to another hero that can be added to your party.

When planning how to spend your Orbs, keep these two goals separate. You may want to invest in general growth upgrades while also saving enough resources to reach the next class unlock.

Best Way to Spend Orbs While Unlocking Classes

Orbs are important because they are used throughout the Growth system, so you should avoid spending them without a plan. If your main goal is unlocking all five classes, consider the following approach:

  • Check the Orb Circuit before spending your Orbs.
  • Identify the branch leading toward your desired class.
  • Follow connected nodes instead of randomly purchasing upgrades.
  • Keep enough Orbs available for the next required node.
  • Avoid assuming an old Orb cost is still accurate.
  • Check the current requirement directly in your game.
  • Unlock new classes before investing heavily into unnecessary branches if roster expansion is your priority.

You do not necessarily need to unlock every class immediately. If you are comfortable with your current hero, you can continue improving your account and save Orbs until you are ready to follow another class branch.

Can You Unlock All Five Classes?

Yes. The current roster contains five classes, with Knight available from the beginning and the other four tied to Orb Circuit progression.

Your long-term goal should be to unlock:

  • Knight
  • Warrior
  • Assassin
  • Archer
  • Mage

Once all five are available, you can start leveling and building them according to your preferred party setup.

Having access to the full roster also gives you more flexibility when experimenting with different team combinations and class roles.


The main thing to remember is that class unlocks are tied to the Orb Circuit, not normal class leveling. If you are trying to get a new hero, increasing the level of your current class will not unlock it. Instead, open the Growth screen and carefully inspect the Orb Circuit. Find the branch connected to the class you want, check the current requirement, and work your way through the nodes.

Because the Orb Circuit can be updated, always use the requirement displayed in your own game as the final reference. Once you reach a class unlock node, purchase it and return to the class screen to add the new hero. With enough Orb Circuit progression, you can eventually build a complete roster containing Knight, Warrior, Assassin, Archer, and Mage.

My Party is Grinding
About Jay
A Content writer for Roonby.com Contact me on [email protected], we can't reply to gmail for some reason.