WHERE & HOW TO FARM Where to farm Episode 17 → Extreme Mode → H17-4.
H17-4 is the final stage in the Episode 17 Extreme set. Approach it as a challenge clear: inspect the map and enemy conditions, build around the threats shown, and use Practice Plans to refine a deployment if needed. Confirm completion and any rewards through the game interface.
Before you go Episode 17 access and Extreme Mode unlocked. H17-4 available after the required prior Extreme progression. Squad appropriate for the displayed map and enemies. Practice Plans if you need to rehearse the strategy. Open Extreme Mode and select H17-4 after it becomes available. Study the enemy preview, map layout, and clear condition. Set a squad to address those specific threats and protect the objective. Use a Practice Plan to test deployment timing or operator placement. Enter H17-4 and complete the displayed objective. Claim the result screen and verify the operation is marked cleared. Review the Extreme list for any remaining completion objective. Farming tips The final stage still requires its own preview-based preparation; do not assume earlier maps’ solutions transfer. Check in-game rewards rather than estimating them from the stage number. Repeat, collect and use The clear and its first-clear rewards are one-time; repeat only for an uncompleted displayed goal or personal challenge.
Common mistakes Attempting H17-4 before the stage list unlocks it; follow chapter progression. Entering with a generic squad without reading the objective; tailor your team to the preview. Treating a challenge clear as a routine material farm; choose a permanent farm if materials are the goal. When to stop or switch Stop once H17-4 is cleared and any displayed completion goal you wanted is claimed.
Sources & fact checks REWARD DETAILS & CONDITIONS Sources & rewards All source types Farming route Farming priority Name A–Z Drop chance
Farming route Episode 17 → Extreme Mode → H17-4.
Episode 17 access and Extreme Mode unlocked. H17-4 available after the required prior Extreme progression. Squad appropriate for the displayed map and enemies. Practice Plans if you need to rehearse the strategy. Rate not listed
Related guides More guides for gathering materials and making progress.
Guide illustration Arknights Permanent Modes and Resource Farms Clear H17-1 as the first listed Episode 17 Extreme challenge and claim its available first-clear rewards.
Guide illustration Arknights Permanent Modes and Resource Farms Advance Episode 17 Extreme progression by clearing H17-2 and collecting its available completion rewards.
Guide illustration Arknights Permanent Modes and Resource Farms Clear H17-3 to continue the Episode 17 Extreme challenge sequence toward H17-4.
Guide illustration Arknights Permanent Modes and Resource Farms Clear the full H17-1 through H17-4 challenge sequence as permanent Episode 17 progression.
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