diff --git a/assets/music&sfx/sfx/purge_sigil.wav b/assets/music&sfx/sfx/purge_sigil.wav
new file mode 100644
index 0000000..c75fdd8
Binary files /dev/null and b/assets/music&sfx/sfx/purge_sigil.wav differ
diff --git a/assets/music&sfx/sfx/purge_sigil.wav.import b/assets/music&sfx/sfx/purge_sigil.wav.import
new file mode 100644
index 0000000..3eadb77
--- /dev/null
+++ b/assets/music&sfx/sfx/purge_sigil.wav.import
@@ -0,0 +1,24 @@
+[remap]
+
+importer="wav"
+type="AudioStreamWAV"
+uid="uid://d056xcusjhd7w"
+path="res://.godot/imported/purge_sigil.wav-9da6710344c80ac37c106e0f9d84aea0.sample"
+
+[deps]
+
+source_file="res://assets/music&sfx/sfx/purge_sigil.wav"
+dest_files=["res://.godot/imported/purge_sigil.wav-9da6710344c80ac37c106e0f9d84aea0.sample"]
+
+[params]
+
+force/8_bit=false
+force/mono=false
+force/max_rate=false
+force/max_rate_hz=44100
+edit/trim=false
+edit/normalize=false
+edit/loop_mode=0
+edit/loop_begin=0
+edit/loop_end=-1
+compress/mode=2
diff --git a/default_bus_layout.tres b/default_bus_layout.tres
index 753af0e..a42e9cf 100644
--- a/default_bus_layout.tres
+++ b/default_bus_layout.tres
@@ -1,5 +1,15 @@
 [gd_resource type="AudioBusLayout" format=3 uid="uid://5oswo22yvmtg"]
 
+[sub_resource type="AudioEffectReverb" id="AudioEffectReverb_purge"]
+predelay_msec = 30.0
+predelay_feedback = 0.4
+room_size = 0.9
+damping = 0.4
+spread = 1.0
+dry = 0.6
+wet = 0.4
+hipass = 0.0
+
 [resource]
 bus/1/name = &"Music"
 bus/1/solo = false
@@ -13,3 +23,11 @@ bus/2/mute = false
 bus/2/bypass_fx = false
 bus/2/volume_db = -14.05601
 bus/2/send = &"Master"
+bus/3/name = &"PurgeReverb"
+bus/3/solo = false
+bus/3/mute = false
+bus/3/bypass_fx = false
+bus/3/volume_db = 0.0
+bus/3/send = &"SFX"
+bus/3/effect/0/effect = SubResource("AudioEffectReverb_purge")
+bus/3/effect/0/enabled = true
diff --git a/scripts/purge.gd b/scripts/purge.gd
index 7868333..b86dbcb 100644
--- a/scripts/purge.gd
+++ b/scripts/purge.gd
@@ -3,6 +3,12 @@ extends Node2D
 const ELITE_DAMAGE_PCT := 0.75
 const FLASH_FADE_DURATION := 0.6
 
+var _build_up_sound = preload("res://assets/music&sfx/sfx/purge_build_up.wav")
+var _impact_boom_sound = preload("res://assets/music&sfx/sfx/purge_impact_boom.wav")
+var _sustained_boom_sound = preload("res://assets/music&sfx/sfx/purge_sustained_boom.wav")
+var _bass_sound = preload("res://assets/music&sfx/sfx/pruge_bass.wav")
+var _flash_sound = preload("res://assets/music&sfx/sfx/purge_sigil.wav")
+
 @onready var summon_circle: AnimatedSprite2D = $SummonCircle/AnimatedSprite2D
 @onready var camera = get_node("/root/Game/Camera2D")
 
@@ -10,8 +16,23 @@ func _ready() -> void:
 	summon_circle.sprite_frames = summon_circle.sprite_frames.duplicate()
 	summon_circle.sprite_frames.set_animation_loop("default", false)
 	summon_circle.animation_finished.connect(_unleash)
+	summon_circle.frame_changed.connect(_on_summon_circle_frame_changed)
 	summon_circle.play("default")
-	camera.shake(6.0, 0.5, true)
+	camera.shake(2.0, 0.5)
+	_play_sfx(_build_up_sound, "SFX")
+
+func _on_summon_circle_frame_changed() -> void:
+	if summon_circle.frame == 77:
+		_play_sfx(_flash_sound, "SFX", -10.0)
+
+func _play_sfx(stream: AudioStream, bus: String, volume_db: float = 0.0) -> void:
+	var asp = AudioStreamPlayer.new()
+	asp.stream = stream
+	asp.bus = bus
+	asp.volume_db = volume_db
+	get_parent().add_child(asp)
+	asp.play()
+	asp.finished.connect(asp.queue_free)
 
 func _unleash() -> void:
 	for enemy in get_tree().get_nodes_in_group("enemies"):
@@ -26,6 +47,9 @@ func _unleash() -> void:
 
 func _flash() -> void:
 	camera.shake(0.4, 8.0)
+	_play_sfx(_impact_boom_sound, "SFX", 3.0)
+	_play_sfx(_sustained_boom_sound, "PurgeReverb")
+	_play_sfx(_bass_sound, "PurgeReverb")
 
 	var circle_tween = create_tween()
 	circle_tween.set_pause_mode(Tween.TWEEN_PAUSE_PROCESS)