diff --git a/apps/web/src/components/game/AchievementPanel.tsx b/apps/web/src/components/game/AchievementPanel.tsx
index 9f808ff..4b21fcf 100644
--- a/apps/web/src/components/game/AchievementPanel.tsx
+++ b/apps/web/src/components/game/AchievementPanel.tsx
@@ -1,6 +1,8 @@
 import type { Achievement } from "@elysium/types";
+import { useState } from "react";
 import { useGame } from "../../context/GameContext.js";
 import { formatNumber } from "../../utils/format.js";
+import { LockToggle } from "../ui/LockToggle.js";
 
 const conditionDescription = (achievement: Achievement): string => {
   const { condition } = achievement;
@@ -53,20 +55,30 @@ const AchievementCard = ({ achievement }: AchievementCardProps): React.JSX.Eleme
 
 export const AchievementPanel = (): React.JSX.Element => {
   const { state } = useGame();
+  const [showLocked, setShowLocked] = useState(true);
 
   if (!state) return <section className="panel"><p>Loading...</p></section>;
 
   const achievements = state.achievements ?? [];
-  const unlocked = achievements.filter((a) => a.unlockedAt !== null).length;
+  const unlocked = achievements.filter((a) => a.unlockedAt !== null);
+  const locked = achievements.filter((a) => a.unlockedAt === null);
+  const visible = showLocked ? achievements : unlocked;
 
   return (
     <section className="panel achievement-panel">
-      <h2>Achievements</h2>
+      <div className="panel-header">
+        <h2>Achievements</h2>
+        <LockToggle
+          lockedCount={locked.length}
+          showLocked={showLocked}
+          onToggle={() => { setShowLocked((v) => !v); }}
+        />
+      </div>
       <p className="achievement-progress">
-        {unlocked} / {achievements.length} unlocked
+        {unlocked.length} / {achievements.length} unlocked
       </p>
       <div className="achievement-list">
-        {achievements.map((achievement) => (
+        {visible.map((achievement) => (
           <AchievementCard key={achievement.id} achievement={achievement} />
         ))}
       </div>
diff --git a/apps/web/src/components/game/BossPanel.tsx b/apps/web/src/components/game/BossPanel.tsx
index 0bf2910..8a35996 100644
--- a/apps/web/src/components/game/BossPanel.tsx
+++ b/apps/web/src/components/game/BossPanel.tsx
@@ -2,6 +2,7 @@ import type { Boss } from "@elysium/types";
 import { useState } from "react";
 import { useGame } from "../../context/GameContext.js";
 import { formatNumber } from "../../utils/format.js";
+import { LockToggle } from "../ui/LockToggle.js";
 import { ZoneSelector } from "./ZoneSelector.js";
 
 interface BossCardProps {
@@ -89,6 +90,7 @@ export const BossPanel = (): React.JSX.Element => {
   const { state, challengeBoss } = useGame();
   const [challengingBossId, setChallengingBossId] = useState<string | null>(null);
   const [activeZoneId, setActiveZoneId] = useState("verdant_vale");
+  const [showLocked, setShowLocked] = useState(true);
 
   if (!state) return <section className="panel"><p>Loading...</p></section>;
 
@@ -139,10 +141,21 @@ export const BossPanel = (): React.JSX.Element => {
 
   const zones = state.zones ?? [];
   const zoneBosses = state.bosses.filter((b) => b.zoneId === activeZoneId);
+  const lockedCount = zoneBosses.filter((b) => b.status === "locked").length;
+  const visibleBosses = showLocked
+    ? zoneBosses
+    : zoneBosses.filter((b) => b.status !== "locked");
 
   return (
     <section className="panel boss-panel">
-      <h2>Boss Encounters</h2>
+      <div className="panel-header">
+        <h2>Boss Encounters</h2>
+        <LockToggle
+          lockedCount={lockedCount}
+          showLocked={showLocked}
+          onToggle={() => { setShowLocked((v) => !v); }}
+        />
+      </div>
 
       <ZoneSelector
         activeZoneId={activeZoneId}
@@ -162,7 +175,7 @@ export const BossPanel = (): React.JSX.Element => {
       </div>
 
       <div className="boss-list">
-        {zoneBosses.map((boss) => (
+        {visibleBosses.map((boss) => (
           <BossCard
             key={boss.id}
             boss={boss}
@@ -173,8 +186,8 @@ export const BossPanel = (): React.JSX.Element => {
             }}
           />
         ))}
-        {zoneBosses.length === 0 && (
-          <p className="empty-zone">No bosses in this zone yet.</p>
+        {visibleBosses.length === 0 && (
+          <p className="empty-zone">No bosses to show in this zone.</p>
         )}
       </div>
     </section>
diff --git a/apps/web/src/components/game/EquipmentPanel.tsx b/apps/web/src/components/game/EquipmentPanel.tsx
index 3807914..134c1f0 100644
--- a/apps/web/src/components/game/EquipmentPanel.tsx
+++ b/apps/web/src/components/game/EquipmentPanel.tsx
@@ -1,5 +1,7 @@
 import type { Equipment, EquipmentType } from "@elysium/types";
+import { useState } from "react";
 import { useGame } from "../../context/GameContext.js";
+import { LockToggle } from "../ui/LockToggle.js";
 
 const RARITY_LABEL: Record<string, string> = {
   common: "Common",
@@ -72,20 +74,31 @@ const SLOT_LABEL: Record<EquipmentType, string> = {
 
 export const EquipmentPanel = (): React.JSX.Element => {
   const { state } = useGame();
+  const [showLocked, setShowLocked] = useState(true);
 
   if (!state) return <section className="panel"><p>Loading...</p></section>;
 
   const equipment = state.equipment ?? [];
+  const unownedCount = equipment.filter((e) => !e.owned).length;
 
   return (
     <section className="panel equipment-panel">
-      <h2>Equipment</h2>
+      <div className="panel-header">
+        <h2>Equipment</h2>
+        <LockToggle
+          lockedCount={unownedCount}
+          showLocked={showLocked}
+          onToggle={() => { setShowLocked((v) => !v); }}
+        />
+      </div>
       <p className="equipment-intro">
         Equipment drops from bosses and grants passive bonuses. Only one item per slot can be equipped at a time.
       </p>
 
       {SLOT_ORDER.map((slotType) => {
-        const items = equipment.filter((e) => e.type === slotType);
+        const items = equipment.filter(
+          (e) => e.type === slotType && (showLocked || e.owned),
+        );
         return (
           <div key={slotType} className="equipment-slot-section">
             <h3 className="slot-heading">{SLOT_LABEL[slotType]}</h3>
@@ -93,6 +106,9 @@ export const EquipmentPanel = (): React.JSX.Element => {
               {items.map((item) => (
                 <EquipmentCard key={item.id} item={item} />
               ))}
+              {items.length === 0 && (
+                <p className="empty-zone">No items to show in this slot.</p>
+              )}
             </div>
           </div>
         );
diff --git a/apps/web/src/components/game/QuestPanel.tsx b/apps/web/src/components/game/QuestPanel.tsx
index 39c503d..00e73ec 100644
--- a/apps/web/src/components/game/QuestPanel.tsx
+++ b/apps/web/src/components/game/QuestPanel.tsx
@@ -1,6 +1,7 @@
 import type { Quest } from "@elysium/types";
 import { useState } from "react";
 import { useGame } from "../../context/GameContext.js";
+import { LockToggle } from "../ui/LockToggle.js";
 import { ZoneSelector } from "./ZoneSelector.js";
 
 const formatDuration = (seconds: number): string => {
@@ -65,15 +66,27 @@ const QuestCard = ({ quest }: QuestCardProps): React.JSX.Element => {
 export const QuestPanel = (): React.JSX.Element => {
   const { state } = useGame();
   const [activeZoneId, setActiveZoneId] = useState("verdant_vale");
+  const [showLocked, setShowLocked] = useState(true);
 
   if (!state) return <section className="panel"><p>Loading...</p></section>;
 
   const zones = state.zones ?? [];
   const zoneQuests = state.quests.filter((q) => q.zoneId === activeZoneId);
+  const lockedCount = zoneQuests.filter((q) => q.status === "locked").length;
+  const visibleQuests = showLocked
+    ? zoneQuests
+    : zoneQuests.filter((q) => q.status !== "locked");
 
   return (
     <section className="panel quest-panel">
-      <h2>Quests</h2>
+      <div className="panel-header">
+        <h2>Quests</h2>
+        <LockToggle
+          lockedCount={lockedCount}
+          showLocked={showLocked}
+          onToggle={() => { setShowLocked((v) => !v); }}
+        />
+      </div>
 
       <ZoneSelector
         activeZoneId={activeZoneId}
@@ -82,11 +95,11 @@ export const QuestPanel = (): React.JSX.Element => {
       />
 
       <div className="quest-list">
-        {zoneQuests.map((quest) => (
+        {visibleQuests.map((quest) => (
           <QuestCard key={quest.id} quest={quest} />
         ))}
-        {zoneQuests.length === 0 && (
-          <p className="empty-zone">No quests in this zone yet.</p>
+        {visibleQuests.length === 0 && (
+          <p className="empty-zone">No quests to show in this zone.</p>
         )}
       </div>
     </section>
diff --git a/apps/web/src/components/game/UpgradePanel.tsx b/apps/web/src/components/game/UpgradePanel.tsx
index f2e2ac6..3759ce3 100644
--- a/apps/web/src/components/game/UpgradePanel.tsx
+++ b/apps/web/src/components/game/UpgradePanel.tsx
@@ -1,5 +1,7 @@
 import type { Upgrade } from "@elysium/types";
+import { useState } from "react";
 import { useGame } from "../../context/GameContext.js";
+import { LockToggle } from "../ui/LockToggle.js";
 
 interface UpgradeCardProps {
   upgrade: Upgrade;
@@ -63,6 +65,7 @@ const UpgradeCard = ({ upgrade, currentGold, currentEssence }: UpgradeCardProps)
 
 export const UpgradePanel = (): React.JSX.Element => {
   const { state } = useGame();
+  const [showLocked, setShowLocked] = useState(true);
 
   if (!state) return <section className="panel"><p>Loading...</p></section>;
 
@@ -72,7 +75,14 @@ export const UpgradePanel = (): React.JSX.Element => {
 
   return (
     <section className="panel upgrade-panel">
-      <h2>Upgrades</h2>
+      <div className="panel-header">
+        <h2>Upgrades</h2>
+        <LockToggle
+          lockedCount={locked.length}
+          showLocked={showLocked}
+          onToggle={() => { setShowLocked((v) => !v); }}
+        />
+      </div>
       <p className="upgrade-progress">{purchased.length} / {state.upgrades.length} purchased</p>
       {state.upgrades.length === 0 ? (
         <p className="empty-state">No upgrades available yet — keep adventuring!</p>
@@ -94,7 +104,7 @@ export const UpgradePanel = (): React.JSX.Element => {
               currentEssence={state.resources.essence}
             />
           ))}
-          {locked.map((upgrade) => (
+          {showLocked && locked.map((upgrade) => (
             <UpgradeCard
               key={upgrade.id}
               upgrade={upgrade}
diff --git a/apps/web/src/components/ui/LockToggle.tsx b/apps/web/src/components/ui/LockToggle.tsx
new file mode 100644
index 0000000..c64089c
--- /dev/null
+++ b/apps/web/src/components/ui/LockToggle.tsx
@@ -0,0 +1,20 @@
+interface LockToggleProps {
+  showLocked: boolean;
+  onToggle: () => void;
+  lockedCount: number;
+}
+
+export const LockToggle = ({
+  showLocked,
+  onToggle,
+  lockedCount,
+}: LockToggleProps): React.JSX.Element => (
+  <button
+    className={`lock-toggle ${showLocked ? "lock-toggle-on" : "lock-toggle-off"}`}
+    onClick={onToggle}
+    title={showLocked ? "Hide locked items" : "Show locked items"}
+    type="button"
+  >
+    {showLocked ? "🔓" : "🔒"} {showLocked ? "Hide" : "Show"} locked ({lockedCount})
+  </button>
+);
diff --git a/apps/web/src/styles.css b/apps/web/src/styles.css
index fe9f23f..8f9cd4b 100644
--- a/apps/web/src/styles.css
+++ b/apps/web/src/styles.css
@@ -1107,6 +1107,47 @@ body {
   font-size: 0.85rem;
 }
 
+/* ── Panel Header (title + lock toggle row) ────────────────────────────── */
+
+.panel-header {
+  align-items: center;
+  display: flex;
+  gap: 1rem;
+  justify-content: space-between;
+  margin-bottom: 0.25rem;
+}
+
+.panel-header h2 {
+  margin: 0;
+}
+
+.lock-toggle {
+  align-items: center;
+  background: rgba(255, 255, 255, 0.06);
+  border: 1px solid rgba(147, 51, 234, 0.3);
+  border-radius: 1rem;
+  color: var(--colour-text-muted);
+  cursor: pointer;
+  display: flex;
+  font-family: inherit;
+  font-size: 0.75rem;
+  gap: 0.3rem;
+  padding: 0.3rem 0.75rem;
+  transition: all 0.2s;
+  white-space: nowrap;
+}
+
+.lock-toggle:hover {
+  background: rgba(147, 51, 234, 0.15);
+  border-color: rgba(147, 51, 234, 0.6);
+  color: var(--colour-text);
+}
+
+.lock-toggle-on {
+  border-color: rgba(147, 51, 234, 0.5);
+  color: var(--colour-text);
+}
+
 /* ── Zone Selector ─────────────────────────────────────────────────────── */
 
 .zone-selector {