Where do you unlock the remaining heroes in My Party Is Grinding?

In the growth tree rather than by levelling, according to players answering each other in three Steam discussion threads; one describes the locked classes appearing as faint boxes when you zoom the growth tab out. The developer has not confirmed this. An achievement id points the same way — ACH_ORB_CLASS_1, held by 66.9% of players on 2026-08-29 — but reading "Orb Circuit" off an id is an inference from the developer's naming, because Steam publishes ids and display names on separate surfaces and never states which goes with which.

Which direction are the Mage and Archer in the growth tree?

A player answering that exact question in the Steam discussions on 2026-08-27 said south, on the green branch. This is a player answer and has not been confirmed by the developer.

How many players have unlocked every class?

The ACH_ORB_CLASS_ALL achievement sat at 1.9% on 2026-08-29, against 66.9% for unlocking a first extra class. Each figure is holders divided by owners, so both move — usually up on a new game, occasionally down when new buyers arrive faster than they unlock. Read them against the date.

My Party Is Grinding heroes: where the locked classes unlock

“Where do the last two heroes unlock?” is the most repeated question in the game’s Steam discussions — three separate threads in three languages on the first day. Other players have answered it. Nobody official has, so everything on this page is labelled with where it came from.

The short answer: the Orb Circuit, not levels

Players answering each other in three Steam threads all point at the growth tree, and those answers are quoted below with the threads they came from. An achievement id points the same way: ACH_ORB_CLASS_1, held by 66.9% of players, while the levelling achievements are tracked under separate ids. Reading “Orb Circuit” off that id is an inference from the developer’s naming — Steam publishes ids and display names on different surfaces and never says which goes with which — so it corroborates the player answers rather than replacing them.

Milestone	Achievement	Global completion
Spent a first Orb Circuit node	`ACH_ORB_FIRST`	88.4%
Unlocked a class through the Orb Circuit	`ACH_ORB_CLASS_1`	66.9%
Unlocked every class	`ACH_ORB_CLASS_ALL`	1.9%
Reached level 10 on a class	`ACH_LEVEL_10`	80.5%
Reached level 30 on a class	`ACH_LEVEL_30`	55.0%
Reached level 50 on every class	`ACH_LEVEL_ALL50`	0.3%

Source: Steam GetGlobalAchievementPercentagesForApp · pulled 2026-08-29. Each figure is holders divided by owners, and both sides move — usually up on a game this new, occasionally down when buyers arrive faster than they unlock — so read them against the pull date rather than as a fixed property of the game.

The wording in the left-hand column is our reading of the achievement’s API id (ACH_TOWER_ENCHANT and so on). Steam publishes ids on this endpoint and display names on a different page, and never states which goes with which, so that reading is an inference from the developer’s own naming rather than a published fact. Where an id gives us nothing to read, the column says so instead of guessing.

The gap between ACH_ORB_CLASS_1 at 66.9% and ACH_ORB_CLASS_ALL at 1.9% is the real shape of this question: most players unlock one extra class, and finishing the set stays rare.

“Unlocking a class” is our reading of the id ACH_ORB_CLASS_1, not a description Steam publishes against that id. It is the developer’s own naming, which is good evidence and not proof.

What players told each other

Pulled from public Steam threads on 2026-08-29. These are player answers. We have not reproduced them in-game and the developer has not confirmed them.

Player answer · unverified

Where do the remaining heroes unlock?

In the growth tab. Zoom out and the locked classes appear as faint boxes you work towards.

“In the growth tab, you've gotta work towards them - it's not too bad. If you scroll out you should see some faint boxes.”English · 2026-08-27 · Steam thread

Player answer · unverified

Which direction are the Mage and the Archer?

South — the green branch.

“South / green ones”English · 2026-08-27 · Steam thread

Player answer · unverified

What does unlocking a class cost?

One player reports Warrior at 1,500 and Assassin at 7,000, and advises unlocking both early. The unit is not stated in the thread and we have not confirmed it.

“早点解锁战士1500，刺客7000 可以顺利推到3-9卡”Simplified Chinese · 2026-08-27 · Steam thread

The five classes

Knight, Warrior, Assassin, Archer and Mage. Each levels independently with stat points plus active and passive skill trees, and you equip a loadout of up to four actives.

Melee