HSR The Great Septimus Boss Guide: Strategies, Rewards, Tips

The Great Septimus, the powerful weekly boss in Honkai Star Rail, poses a significant challenge for even the most seasoned players. Defeating the embodiment of Harmony and Order, encountered during the Penacony storyline climax, demands careful strategy and the right team composition. Here's a comprehensive guide on how to unlock, locate, and win over The Great Septimus, as well as the rewards that await after you defeat the boss.

The Great Septimus Boss Guide in Honkai Star Rail

The Great Septimus battle will be divided into three distinct phases, each marked by unique Imaginary attacks. The boss's arsenal includes:

• Single-target strikes
• AoE damage
• Party member stuns
• Defense-ignoring abilities
• Self-shielding

However, by exploiting its weaknesses in Fire, Lightning, and Imaginary elements in the first two phases and all elements in the final phase, you can easily win this battle.

Defeating the boss' four summoned entities grants the whole party a protective shield and temporarily increases The Great Septimus's vulnerability to Break effects. Taking advantage of these moments is the key to winning the boss battle.

How to Unlock The Great Septimus Boss Fight

To unlock The Great Septimus, you must first progress through the Penacony main story quests. The boss battle becomes available after completing the "And on the Eighth Day" quest, where the true identity of Sunday is revealed.

Once defeated in the story, The Great Septimus can be challenged up to three times per week for a chance at exclusive rewards.

How to Find The Great Septimus Boss

The Great Septimus awaits you in the grand Penacony Theater. Here is what you need to do to find him:

1. From the entrance, proceed through the hallway
2. Then, descend the stairs
3. Make your way directly to the main stage

After unlocking the boss, you can conveniently teleport to this location for other attempts.

Recommended Team to Beat The Great Septimus Boss

Assembling a team that can exploit The Great Septimus's weaknesses is essential. Strong DPS units and reliable shielders are the backbone of an effective lineup. Consider including characters such as:

• Acheron
• Guinaifen
• Kafka
• Luocha
• Dan Heng
• Aventurine
• Topaz and Numby
• Himeko
• Fu Xuan
• Robin

The Great Septimus Boss Rewards in Honkai Star Rail

Defeating The Great Septimus will reward you with an array of valuable materials, such as:

• Lost Echo of the Shared Wish
• The Ashblazing Grand Duke relic set pieces
• Watchmaker, Master of Dream Machinations Relic 
• Lucent Afterglow
• Abundance Light Cone
• Harmony Light Cone
• Hunt Light Cone
• Destruction Light Cone
• Preservation Light Cone
• Erudition Light Cone
• Nihility Light Cone
• Credit

By understanding the boss's mechanics, exploiting his weaknesses, and assembling a balanced team, you can hopefully win over The Great Septimus in Honkai Star Rail easily. Good luck!