How to complete the Foolish Little Brother achievement in Honkai Star Rail

HoYoverse is known for its unconventional achievements system, and its latest RPG title, Honkai Star Rail, is no exception. The game features a plethora of diverse challenges, ranging from receiving rewards for taunting enemies or conversing with trash to deliberately provoking fearsome foes.

RPGs have evolved significantly over the years, with achievements being a prominent feature in many titles. Achievements serve as a way for players to go beyond the main story arc, providing additional objectives and rewards that help enhance their overall experience.

In RPGs, players can expect to earn achievements for various tasks, such as completing specific quests, defeating challenging bosses, or collecting rare items. These achievements serve as a testament to a player's progress and skill in the game.

In Honkai Star Rail, achievements provide players with small amounts of Jades as rewards. Interestingly, there are even achievements that can only be accomplished by utilizing specific characters in specific manners.

Honkai Star Rail's character-specific tasks are a distinguishing aspect of the game, demanding players to accomplish distinct obstacles using every playable character. These tasks not only elevate the complexity of the game but also enable players to comprehensively discover each character's traits and capabilities.

Character-specific achievements fall under the Eager for Battle category in the Achievements menu and are all concealed until completion. These achievements reward players with 10 Stellar Jades.

Here's all you need to know about the Foolish Little Brother hidden achievement.

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Honkai Star Rail guide: Use Serval against a boss Gepard to finish Foolish Little Brother achievement

Completing this Honkai Star Rail quest requires you to use Serval against a boss Gepard. Belonging to the Erudition path, Serval is a four-star lightning character with the ability to deal multi-target, area-of-effect (AoE) damage and apply lightning damage over time.

To unlock the hidden achievement called "Foolish Little Brother" in Honkai Star Rail, players must defeat Gepard using Serval, his older sister. It is not necessary to use only one character during the fight as long as Serval delivers the final blow to Gepard.

Gepard and Serval (Image via HoYoVerse)

Fortunately, Serval is naturally strong against Gepard, as she can deal Lightning damage that Gepard is vulnerable to. Players can obtain Serval as a reward for pre-registering and following the game's social media accounts when they unlock the in-game mail.

Hence, players can attempt to achieve this feat during their initial battles with Gepard. However, it is important to note that this pertains only to the boss fight during the Young Guard mission, as players cannot defeat Gepard in their first encounter with him.

Serval vs Gepard (Image via HoYoVerse)

Several achievements are acquired during story-related battles, meaning players can get them by casually completing missions, and they may pop up unexpectedly. If players are unable to earn the achievement immediately, they don't need to worry. They can challenge most bosses again in the Simulated Universe, albeit at a significantly higher difficulty level.

You may also want to explore Simulated Universe World 3, as it features Gepard as the boss, providing players with numerous opportunities to defeat him with Serval's final blow.

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Overall, these character-specific challenges require players to complete unique tasks with each character, which adds an extra layer of complexity to Honkai Star Rail while allowing players to explore the abilities and personalities of each character. Make sure to capitalize on these hidden tasks to gather more rewards in the game.