diff --git a/internal/plugin/dnd_expedition_camp.go b/internal/plugin/dnd_expedition_camp.go
index bf46b24..be478f8 100644
--- a/internal/plugin/dnd_expedition_camp.go
+++ b/internal/plugin/dnd_expedition_camp.go
@@ -2,10 +2,12 @@ package plugin
 
 import (
 	"fmt"
+	"math/rand/v2"
 	"strings"
 	"time"
 
 	"gogobee/internal/flavor"
+	"maunium.net/go/mautrix/id"
 )
 
 // Phase 12 E1e — basic camp system (rough + standard).
@@ -77,8 +79,13 @@ func (p *AdventurePlugin) handleCampCmd(ctx MessageContext, args string) error {
 	case "rough", "standard":
 		// allowed in E1e
 	case "fortified":
-		return p.SendDM(ctx.Sender,
-			"Fortified camps require a boss-cleared room or cache site. (Wires up in a later phase — for now, `rough` or `standard`.)")
+		// E2d: §5.1 — boss-cleared room or cache site. Cache sites
+		// are zone-specific waypoints (E3+), so for now we require the
+		// expedition's boss to have been defeated.
+		if !exp.BossDefeated {
+			return p.SendDM(ctx.Sender,
+				"Fortified camps require a boss-cleared room or cache site. Defeat the zone boss (or find a cache) first.")
+		}
 	case "base":
 		return p.SendDM(ctx.Sender,
 			"Base camps unlock in Tier 4–5 zones from Day 3+. (Wires up in a later phase.)")
@@ -96,6 +103,7 @@ func campHelpText(exp *Expedition) string {
 	b.WriteString("**!camp <type>** — establish camp during an expedition.\n\n")
 	b.WriteString("`!camp rough` — partial rest (any location, +0.5 SU, high night risk)\n")
 	b.WriteString("`!camp standard` — full long rest (cleared room, +1 SU, medium risk)\n")
+	b.WriteString("`!camp fortified` — long rest + bonus (boss-cleared room, +2 SU, low risk)\n")
 	b.WriteString("`!camp break` — break camp\n\n")
 	if exp.Camp != nil && exp.Camp.Active {
 		b.WriteString(fmt.Sprintf("_Currently camped: **%s** (room %d)._",
@@ -160,14 +168,99 @@ func (p *AdventurePlugin) campPitch(ctx MessageContext, exp *Expedition, kind st
 	if line != "" {
 		b.WriteString("\n" + line + "\n")
 	}
-	if kind == CampTypeRough {
+	switch kind {
+	case CampTypeRough:
 		b.WriteString("\n_Rough camp — partial rest. HP recovers to 50%, no spell slots restored._")
-	} else {
+	case CampTypeFortified:
+		b.WriteString("\n_Fortified camp — long rest + 1d6 HP bonus on wake; threat clock −5; wandering rolls −4._")
+	default:
 		b.WriteString("\n_Standard camp — full long rest at the next morning briefing._")
 	}
 	return p.SendDM(ctx.Sender, b.String())
 }
 
+// processOvernightCamp applies the overnight long-rest effects of an
+// active camp at briefing time (§3, §5.1, §8.1). Auto-breaks the camp
+// after the rest. Returns a one-line summary for the briefing body.
+//
+// Effects:
+//   - rough: HP recovered to at least 50% of max.
+//   - standard: HP fully restored, spell slots refreshed, exhaustion -1.
+//   - fortified: standard + 1d6 HP bonus on top, threat -5.
+//   - base: same as fortified for the rest itself; persistent waypoint
+//     mechanics land in E4.
+//
+// Returns "" if the expedition wasn't camped overnight.
+func processOvernightCamp(e *Expedition) string {
+	if e.Camp == nil || !e.Camp.Active {
+		return ""
+	}
+	uid := id.UserID(e.UserID)
+	c, _ := LoadDnDCharacter(uid)
+	if c == nil {
+		// No character to apply HP/spells to; just break the camp.
+		_ = updateCamp(e.ID, nil)
+		return ""
+	}
+	kind := e.Camp.Type
+	prevHP := c.HPCurrent
+	bonusHP := 0
+
+	switch kind {
+	case CampTypeRough:
+		half := c.HPMax / 2
+		if c.HPCurrent < half {
+			c.HPCurrent = half
+		}
+	case CampTypeStandard:
+		c.HPCurrent = c.HPMax
+		c.TempHP = 0
+		if c.Exhaustion > 0 {
+			c.Exhaustion--
+		}
+	case CampTypeFortified, CampTypeBase:
+		c.HPCurrent = c.HPMax
+		c.TempHP = 0
+		if c.Exhaustion > 0 {
+			c.Exhaustion--
+		}
+		bonusHP = 1 + rand.IntN(6)
+		c.HPCurrent += bonusHP
+		if c.HPCurrent > c.HPMax {
+			c.HPCurrent = c.HPMax
+		}
+	}
+	_ = SaveDnDCharacter(c)
+	if kind == CampTypeStandard || kind == CampTypeFortified || kind == CampTypeBase {
+		_ = refreshAllResources(uid)
+		_ = refreshSpellSlots(uid)
+	}
+
+	// Threat reduction (§8.1: -5 for fortified long rest).
+	if kind == CampTypeFortified || kind == CampTypeBase {
+		_ = applyThreatDelta(e.ID, -5, "long rest in fortified camp")
+	}
+
+	// Auto-break the camp now that the rest has been applied.
+	_ = updateCamp(e.ID, nil)
+	e.Camp = nil
+
+	// Pretty summary for the briefing body.
+	switch kind {
+	case CampTypeRough:
+		if c.HPCurrent > prevHP {
+			return fmt.Sprintf("Rough rest: HP %d → %d.", prevHP, c.HPCurrent)
+		}
+		return "Rough rest: no HP gain (already above the half-HP floor)."
+	case CampTypeStandard:
+		return fmt.Sprintf("Long rest: HP %d → %d, spell slots & resources refreshed.", prevHP, c.HPCurrent)
+	case CampTypeFortified, CampTypeBase:
+		return fmt.Sprintf("Fortified rest: HP %d → %d (+1d6 = %d bonus); threat clock −5; resources refreshed.",
+			prevHP, c.HPCurrent, bonusHP)
+	}
+	return ""
+}
+
 func (p *AdventurePlugin) campBreak(ctx MessageContext, exp *Expedition) error {
 	if exp.Camp == nil || !exp.Camp.Active {
 		return p.SendDM(ctx.Sender, "No camp to break.")
diff --git a/internal/plugin/dnd_expedition_camp_e2d_test.go b/internal/plugin/dnd_expedition_camp_e2d_test.go
new file mode 100644
index 0000000..3af85d7
--- /dev/null
+++ b/internal/plugin/dnd_expedition_camp_e2d_test.go
@@ -0,0 +1,145 @@
+package plugin
+
+import (
+	"strings"
+	"testing"
+	"time"
+
+	"gogobee/internal/db"
+	"maunium.net/go/mautrix/id"
+)
+
+// Phase 12 E2d — Fortified camp branch.
+
+func TestCampCmd_FortifiedRequiresBossDefeated(t *testing.T) {
+	setupZoneRunTestDB(t)
+	uid := id.UserID("@camp-fortified-pre:example")
+	campTestCharacter(t, uid, 1)
+	defer cleanupExpeditions(uid)
+
+	if _, err := startExpedition(uid, ZoneGoblinWarrens, "",
+		ExpeditionSupplies{Current: 5, Max: 5, DailyBurn: 1, HarshMod: 1}); err != nil {
+		t.Fatal(err)
+	}
+	p := &AdventurePlugin{}
+	if err := p.handleCampCmd(MessageContext{Sender: uid}, "fortified"); err != nil {
+		t.Fatal(err)
+	}
+	got, _ := getActiveExpedition(uid)
+	if got.Camp != nil && got.Camp.Active {
+		t.Error("fortified camp should be rejected before boss defeated")
+	}
+}
+
+func TestCampCmd_FortifiedAfterBossSucceeds(t *testing.T) {
+	setupZoneRunTestDB(t)
+	uid := id.UserID("@camp-fortified-post:example")
+	campTestCharacter(t, uid, 1)
+	defer cleanupExpeditions(uid)
+
+	exp, err := startExpedition(uid, ZoneGoblinWarrens, "",
+		ExpeditionSupplies{Current: 5, Max: 5, DailyBurn: 1, HarshMod: 1})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := db.Get().Exec(`UPDATE dnd_expedition SET boss_defeated = 1 WHERE expedition_id = ?`, exp.ID); err != nil {
+		t.Fatal(err)
+	}
+	p := &AdventurePlugin{}
+	if err := p.handleCampCmd(MessageContext{Sender: uid}, "fortified"); err != nil {
+		t.Fatal(err)
+	}
+	got, _ := getActiveExpedition(uid)
+	if got.Camp == nil || !got.Camp.Active || got.Camp.Type != CampTypeFortified {
+		t.Errorf("expected active fortified camp, got %+v", got.Camp)
+	}
+	if got.Supplies.Current != 3 { // 5 − 2 SU
+		t.Errorf("supplies after fortified pitch = %v, want 3", got.Supplies.Current)
+	}
+}
+
+func TestProcessOvernightCamp_StandardRefillsHP(t *testing.T) {
+	setupZoneRunTestDB(t)
+	uid := id.UserID("@camp-rest-std:example")
+	campTestCharacter(t, uid, 1)
+	defer cleanupExpeditions(uid)
+
+	c, _ := LoadDnDCharacter(uid)
+	c.HPCurrent = 5
+	_ = SaveDnDCharacter(c)
+
+	exp, _ := startExpedition(uid, ZoneGoblinWarrens, "",
+		ExpeditionSupplies{Current: 5, Max: 5, DailyBurn: 1, HarshMod: 1})
+	exp.Camp = &CampState{Active: true, Type: CampTypeStandard, EstablishedAt: time.Now().UTC()}
+	_ = updateCamp(exp.ID, exp.Camp)
+
+	summary := processOvernightCamp(exp)
+	if !strings.Contains(strings.ToLower(summary), "long rest") {
+		t.Errorf("standard rest summary = %q", summary)
+	}
+	got, _ := LoadDnDCharacter(uid)
+	if got.HPCurrent != got.HPMax {
+		t.Errorf("HP after standard rest = %d, want max %d", got.HPCurrent, got.HPMax)
+	}
+	postExp, _ := getExpedition(exp.ID)
+	if postExp.Camp != nil {
+		t.Error("camp should auto-break after rest")
+	}
+}
+
+func TestProcessOvernightCamp_FortifiedReducesThreatAndAddsBonus(t *testing.T) {
+	setupZoneRunTestDB(t)
+	uid := id.UserID("@camp-rest-fort:example")
+	campTestCharacter(t, uid, 1)
+	defer cleanupExpeditions(uid)
+
+	c, _ := LoadDnDCharacter(uid)
+	c.HPCurrent = c.HPMax // already full; bonus would clip at max
+	c.HPMax = 30
+	c.HPCurrent = 30
+	_ = SaveDnDCharacter(c)
+
+	exp, _ := startExpedition(uid, ZoneGoblinWarrens, "",
+		ExpeditionSupplies{Current: 5, Max: 5, DailyBurn: 1, HarshMod: 1})
+	if err := applyThreatDelta(exp.ID, 40, "seed"); err != nil {
+		t.Fatal(err)
+	}
+	exp, _ = getExpedition(exp.ID)
+	exp.Camp = &CampState{Active: true, Type: CampTypeFortified, EstablishedAt: time.Now().UTC()}
+	_ = updateCamp(exp.ID, exp.Camp)
+
+	summary := processOvernightCamp(exp)
+	if !strings.Contains(strings.ToLower(summary), "fortified rest") {
+		t.Errorf("fortified rest summary = %q", summary)
+	}
+	postExp, _ := getExpedition(exp.ID)
+	if postExp.ThreatLevel != 35 {
+		t.Errorf("threat after fortified rest = %d, want 35", postExp.ThreatLevel)
+	}
+	if postExp.Camp != nil {
+		t.Error("camp should auto-break after rest")
+	}
+}
+
+func TestProcessOvernightCamp_RoughHalfHPFloor(t *testing.T) {
+	setupZoneRunTestDB(t)
+	uid := id.UserID("@camp-rest-rough:example")
+	campTestCharacter(t, uid, 1)
+	defer cleanupExpeditions(uid)
+
+	c, _ := LoadDnDCharacter(uid)
+	c.HPMax = 20
+	c.HPCurrent = 4 // way under half
+	_ = SaveDnDCharacter(c)
+
+	exp, _ := startExpedition(uid, ZoneGoblinWarrens, "",
+		ExpeditionSupplies{Current: 5, Max: 5, DailyBurn: 1, HarshMod: 1})
+	exp.Camp = &CampState{Active: true, Type: CampTypeRough, EstablishedAt: time.Now().UTC()}
+	_ = updateCamp(exp.ID, exp.Camp)
+
+	_ = processOvernightCamp(exp)
+	got, _ := LoadDnDCharacter(uid)
+	if got.HPCurrent != 10 {
+		t.Errorf("rough rest HP = %d, want 10 (half of 20)", got.HPCurrent)
+	}
+}
diff --git a/internal/plugin/dnd_expedition_cycle.go b/internal/plugin/dnd_expedition_cycle.go
index 05210b5..ea12449 100644
--- a/internal/plugin/dnd_expedition_cycle.go
+++ b/internal/plugin/dnd_expedition_cycle.go
@@ -162,6 +162,19 @@ func (p *AdventurePlugin) deliverBriefing(e *Expedition, now time.Time) error {
 	e.Supplies = newSupplies
 	e.CurrentDay++
 
+	// E2d: overnight camp rest effects (HP/spells/threat). Auto-breaks
+	// the camp after applying. Run before threat drift so a fortified
+	// camp's −5 lands first and a same-day +3 drift can't push back over
+	// a threshold the rest just dropped.
+	restSummary := processOvernightCamp(e)
+	if restSummary != "" {
+		if fresh, err := getExpedition(e.ID); err == nil && fresh != nil {
+			e.ThreatLevel = fresh.ThreatLevel
+			e.SiegeMode = fresh.SiegeMode
+			e.Camp = fresh.Camp
+		}
+	}
+
 	// E2a: daily threat drift (+3 base, GM-mood modifier). No-op after
 	// boss kill. May cross a threshold and append a flavor-bearing log.
 	if _, _, err := applyDailyThreatDrift(e); err != nil {
@@ -170,6 +183,9 @@ func (p *AdventurePlugin) deliverBriefing(e *Expedition, now time.Time) error {
 
 	line := pickMorningBriefing(e.CurrentDay)
 	body := renderMorningBriefing(e, line, burn)
+	if restSummary != "" {
+		body += "\n💤 _" + restSummary + "_\n"
+	}
 
 	if uid := id.UserID(e.UserID); uid != "" {
 		if err := p.SendDM(uid, body); err != nil {