Complete guide to finding Eva in Hollow Knight Silksong and unlocking her four essential upgrades for Hornet
Introduction to Eva and Her Upgrades

Deep within the intricate caverns of Pharloom lies a vital resource for any player seeking to maximize Hornet’s potential. While traversing the diverse regions of the kingdom, your journey may lead you to the secluded Weavenest Atla. Here, imprisoned within a sealed chamber, you’ll encounter Eva—a mysterious bug who serves as a crucial upgrade vendor.
Eva provides four distinct and powerful enhancements for Hornet, each unlocked only after you accomplish specific milestones during your adventure. These upgrades are not handed out freely; they are rewards for demonstrated skill and progression, significantly impacting your combat effectiveness, resource management, and overall build flexibility in Hollow Knight: Silksong.
Detailed Upgrade Breakdown and Requirements
Each of Eva’s upgrades requires careful planning and achievement. Below is a detailed breakdown of what each enhancement offers and the exact prerequisites you must fulfill.
- Focus Strike Upgrade
Effect: Successive strikes against enemies build focus, dramatically increasing the potency of Hornet’s needle attacks.
Requirement: Achieve victory over the Widow boss and return to converse with Eva. - Yellow Tool Slot Expansion
Effect: Grants a permanent additional yellow tool slot. This slot remains active irrespective of which crest you have equipped, offering incredible build versatility.
Requirement: First unlock four base tool slots by utilizing Memory Lockets found throughout the world. - Blue Tool Slot Expansion
Effect: Provides a permanent additional blue tool slot, again unaffected by your currently equipped crest. This is invaluable for late-game tool loadouts.
Requirement: A significant investment is needed: unlock 15 total tool slots using Memory Lockets. This ambitious goal typically involves collecting approximately five different crests. - Silk Regeneration Mastery
Effect: Completely refills your Silk gauge each time you rest at any bench. This eliminates resource anxiety and empowers aggressive, ability-spam playstyles.
Requirement: The ultimate endgame reward. You must obtain every crest in the game and utilize a total of 18 Memory Lockets.
Critical Pre-Visit Preparation: One of the most common errors players make is arriving at Eva unprepared for a specific upgrade path. To unlock the Evolved variant of the Hunter’s Crest, you must have it equipped when you speak to her. If it sits in your inventory unequipped, Eva will be unable to perform the enhancement, forcing a return trip.
Step-by-Step Path to Weavenest Atla
Reaching Eva is a multi-stage process that begins with a major boss fight. Your gateway to the Weavenest Atla is the Needolin skill, acquired only after confronting and defeating the Widow boss.
Once you possess Needolin, travel back to the Moss Grotto. Navigate to the vicinity of a previously impassable door, located just before the arena where you battled the Moss Mother.
Activate Needolin at the Door: Stand before this sealed entrance and perform the Needolin skill. This will unlock the path forward. Proceed directly to the right, bypassing the Elevator structure. You will discover a chamber containing two interactive levers.
Secure the Map and Descend: Pull both levers. This action will reveal and allow you to collect the Weavenest Atla map, a crucial navigational aid. Retrace your steps to the Elevator and ride it down one level to the floor below.
Final Approach to Eva: From the elevator, turn right. Adhere to this winding path, being prepared to shatter several fragile walls obstructing your way. Continue through these breaches until you arrive at the chamber housing Eva. Initiate dialogue with her to review your achievements and claim your well-earned upgrades, including the coveted permanent tool slot expansions.
Advanced Strategies and Common Pitfalls
To optimize your visit to Eva, consider integrating it into your natural progression. The requirement to defeat the Widow makes this a mid-game objective. Plan your Memory Locket usage from the early game; avoid spending them on minor tool slots if your goal is Eva’s blue slot or Silk regeneration upgrades, as you’ll need a substantial count (15-18).
Common Errors to Avoid:
1. Missing the Levers: The room with the two levers is easy to rush past. Not activating them means missing the Weavenest Atla map, complicating future exploration.
2. Wrong Walls: On the final path, not all walls are breakable. Look for walls with slight visual cracks or inconsistencies and use your needle attack to test them.
3. Unequipped Crest: As stated, never approach Eva without the Hunter’s Crest actively equipped if you seek its evolution.
Tool Slot Management Tip: Treat your first four tool slots (unlocked with Memory Lockets) as a baseline. Eva’s yellow slot upgrade then becomes a powerful, crest-independent fifth slot. This allows you to equip a powerful yellow tool while using a crest that focuses on blue or red tools, enabling hybrid builds much earlier than normally possible.
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