diff --git a/src/audio.asm b/src/audio.asm
index a548a36..4f1fb92 100644
--- a/src/audio.asm
+++ b/src/audio.asm
@@ -491,7 +491,6 @@ _ContinueNote:
     beq _IncrementFramesAndReturn
 _ContinueTone:
     jsr Func_AudioCallInstrument  ; preserves X, returns A
-    ;; TODO: Apply master volume.
     sta Hw_Channels_sChanRegs_arr5 + sChanRegs::Envelope_wo, x
 _IncrementFramesAndReturn:
     inc Ram_Music_sChanNote_arr + sChanNote::ElapsedFrames_u8, x
diff --git a/src/breaker.asm b/src/breaker.asm
index 74b6c35..db03145 100644
--- a/src/breaker.asm
+++ b/src/breaker.asm
@@ -105,7 +105,7 @@ Zp_BreakerBeingActivated_eFlag: .res 1
 ;;; @prereq Explore mode is initialized.
 .PROC Main_Breaker_TraceCircuit
     jsr Func_FadeOutToBlack
-    ;; TODO: implement this
+    ;; TODO: implement circuit-tracing cutscene
     fall Main_Breaker_LoadCoreRoom
 .ENDPROC
 
diff --git a/src/dialog.asm b/src/dialog.asm
index daa4a5f..af6b678 100644
--- a/src/dialog.asm
+++ b/src/dialog.asm
@@ -143,6 +143,7 @@
 .IMPORT DataA_Dialog_SewerPoolSign_sDialog
 .IMPORT DataA_Dialog_ShadowDrillScreen_sDialog
 .IMPORT DataA_Dialog_ShadowGateScreen_sDialog
+.IMPORT DataA_Dialog_ShadowOfficeAcid_sDialog
 .IMPORT DataA_Dialog_ShadowOfficeFireball_sDialog
 .IMPORT DataA_Dialog_ShadowOfficeTeleport_sDialog
 .IMPORT DataA_Dialog_ShadowTeleportScreen_sDialog
@@ -567,6 +568,7 @@ _Finish:
     d_entry t, SewerPoolSign,        DataA_Dialog_SewerPoolSign_sDialog
     d_entry t, ShadowDrillScreen,    DataA_Dialog_ShadowDrillScreen_sDialog
     d_entry t, ShadowGateScreen,     DataA_Dialog_ShadowGateScreen_sDialog
+    d_entry t, ShadowOfficeAcid,     DataA_Dialog_ShadowOfficeAcid_sDialog
     d_entry t, ShadowOfficeFireball, DataA_Dialog_ShadowOfficeFireball_sDialog
     d_entry t, ShadowOfficeTeleport, DataA_Dialog_ShadowOfficeTeleport_sDialog
     d_entry t, ShadowTeleportScreen, DataA_Dialog_ShadowTeleportScreen_sDialog
diff --git a/src/dialog.inc b/src/dialog.inc
index caa678f..5eb7601 100644
--- a/src/dialog.inc
+++ b/src/dialog.inc
@@ -218,6 +218,7 @@ kDialogEntryCutscene = $ff  ; ends the dialog and starts a new cutscene
     SewerPoolSign
     ShadowDrillScreen
     ShadowGateScreen
+    ShadowOfficeAcid
     ShadowOfficeFireball
     ShadowOfficeTeleport
     ShadowTeleportScreen
diff --git a/src/fake.asm b/src/fake.asm
index f7c21be..772211b 100644
--- a/src/fake.asm
+++ b/src/fake.asm
@@ -27,7 +27,9 @@
 .INCLUDE "machine.inc"
 .INCLUDE "machines/carriage.inc"
 .INCLUDE "machines/emitter.inc"
+.INCLUDE "machines/field.inc"
 .INCLUDE "machines/lift.inc"
+.INCLUDE "machines/multiplexer.inc"
 .INCLUDE "machines/semaphore.inc"
 .INCLUDE "machines/shared.inc"
 .INCLUDE "macros.inc"
@@ -52,6 +54,8 @@
 .IMPORT Func_Window_TransferBottomBorder
 .IMPORT Func_Window_TransferClearRow
 .IMPORT Main_Console_CloseWindow
+.IMPORT Ppu_ChrObjAnnaNormal
+.IMPORT Ppu_ChrObjBoss1
 .IMPORT Ram_DeviceTarget_byte_arr
 .IMPORT Ram_PpuTransfer_arr
 .IMPORTZP Zp_ConsoleNeedsPower_u8
@@ -73,6 +77,18 @@ kFakeConsoleMessageRows = kMaxProgramLength / 2
 ;;; The width of the fake console message box, in tiles.
 kFakeConsoleMessageCols = 19
 
+;;; The eDiagram value to use for the "CoreDump" fake console.  The only thing
+;;; that matters is that it have a first tile ID of $f0, so that it will use
+;;; the proper row of tiles from the second half of Ppu_ChrObjBoss1.
+.ASSERT kTileIdBgDiagramCarriageFirst = $f0, error
+kDiagramCoreDump = eDiagram::Carriage
+
+;;; The eDiagram value to use for the "Corrupted" fake console.  The only thing
+;;; that matters is that it have a first tile ID of $f0, so that it will use
+;;; the proper row of tiles from the first half of Ppu_ChrObjAnnaNormal.
+.ASSERT kTileIdBgDiagramCarriageFirst = $f0, error
+kDiagramCorrupted = eDiagram::Carriage
+
 ;;;=========================================================================;;;
 
 .ZEROPAGE
@@ -158,11 +174,11 @@ _InitWindow:
     jmp Func_PlaySfxWindowOpen
 _Chr0cBank_u8_arr:
     D_ARRAY .enum, eFake
-    d_byte CoreDump,         $61  ; TODO
-    d_byte Corrupted,        $61  ; TODO
+    d_byte CoreDump,         <.bank(Ppu_ChrObjBoss1)      + 1  ; second half
+    d_byte Corrupted,        <.bank(Ppu_ChrObjAnnaNormal) + 0  ; first half
     d_byte EndThis,          kChrBankDiagramCarriage
-    d_byte InsufficientData, $50  ; TODO
-    d_byte IsThisEthical,    $60  ; TODO
+    d_byte InsufficientData, kChrBankDiagramMultiplexer
+    d_byte IsThisEthical,    kChrBankDiagramField
     d_byte NoPower,          kChrBankDiagramLift
     d_byte NoResponse,       kChrBankDiagramSemaphoreComm
     D_END
@@ -223,11 +239,11 @@ _DrawStatus:
     jmp FuncA_Console_WriteDiagramTransferDataForDiagram
 _Fake_eDiagram:
     D_ARRAY .enum, eFake
-    d_byte CoreDump,         eDiagram::MinigunDown  ; TODO
-    d_byte Corrupted,        eDiagram::MinigunDown  ; TODO
+    d_byte CoreDump,         kDiagramCoreDump
+    d_byte Corrupted,        kDiagramCorrupted
     d_byte EndThis,          eDiagram::Carriage
-    d_byte InsufficientData, eDiagram::MinigunDown  ; TODO
-    d_byte IsThisEthical,    eDiagram::MinigunDown  ; TODO
+    d_byte InsufficientData, eDiagram::Multiplexer
+    d_byte IsThisEthical,    eDiagram::Field
     d_byte NoPower,          eDiagram::Lift
     d_byte NoResponse,       eDiagram::SemaphoreComm
     D_END
diff --git a/src/rooms/shadow_flower.asm b/src/rooms/shadow_flower.asm
index 75c5e5e..9a1eb4e 100644
--- a/src/rooms/shadow_flower.asm
+++ b/src/rooms/shadow_flower.asm
@@ -313,7 +313,7 @@ _MaybeKillFlowerBaddie:
     ldy #0                         ; param: laser bottom (hi)
     jmp FuncA_Machine_LaserTryAct
 _LaserBottom_i16_0_arr:
-:   .byte $50, $c0, $90, $70, $c5, $70, $c5, $80, $c0, $30
+:   .byte $50, $c0, $90, $70, $c0, $70, $80, $80, $c0, $30
     .assert * - :- = kLaserMaxGoalX + 1, error
 .ENDPROC
 
diff --git a/src/rooms/shadow_office.asm b/src/rooms/shadow_office.asm
index 47f212c..e60a66a 100644
--- a/src/rooms/shadow_office.asm
+++ b/src/rooms/shadow_office.asm
@@ -44,6 +44,7 @@
 .IMPORT FuncA_Terrain_FadeInShortRoomWithLava
 .IMPORT Func_BufferPpuTransfer
 .IMPORT Func_FindEmptyActorSlot
+.IMPORT Func_InitActorDefault
 .IMPORT Func_InitActorProjFireball
 .IMPORT Func_InitActorSmokeExplosion
 .IMPORT Func_IsPointInPlatform
@@ -62,10 +63,19 @@
 .IMPORTZP Zp_AvatarPosX_i16
 .IMPORTZP Zp_AvatarPosY_i16
 .IMPORTZP Zp_PointX_i16
+.IMPORTZP Zp_PointY_i16
 .IMPORTZP Zp_RoomState
 
 ;;;=========================================================================;;;
 
+;;; How long between drips of acid, in frames.
+.DEFINE kAcidDripSlowdown 8
+
+;;; The total time for a full acid dripping sequence, in frames.
+kAcidDripFrames = kAcidDripSlowdown * 4
+
+;;;=========================================================================;;;
+
 ;;; The actor index for the ghost in this room.
 kGhostActorIndex = 0
 
@@ -119,6 +129,8 @@ kLiftInitPlatformTop = kLiftMaxPlatformTop - kLiftInitGoalY * kBlockHeightPx
 
 ;;; Defines room-specific state data for this particular room.
 .STRUCT sState
+    ;; How many more frames until the acid console can be activated again.
+    AcidCooldown_u8 .byte
     ;; How many more frames until the fireball console can be activated again.
     FireballCooldown_u8 .byte
     ;; How many more frames until the teleport count resets.
@@ -235,10 +247,10 @@ _Devices_sDevice_arr:
     d_byte Target_byte, eFake::CoreDump
     D_END
     D_STRUCT sDevice
-    d_byte Type_eDevice, eDevice::FakeConsole
+    d_byte Type_eDevice, eDevice::ScreenGreen
     d_byte BlockRow_u8, 2
     d_byte BlockCol_u8, 6
-    d_byte Target_byte, eFake::InsufficientData  ; TODO shock vert
+    d_byte Target_byte, eDialog::ShadowOfficeAcid
     D_END
     D_STRUCT sDevice
     d_byte Type_eDevice, eDevice::FakeConsole
@@ -330,6 +342,34 @@ _Passages_sPassage_arr:
 .SEGMENT "PRGA_Room"
 
 .PROC FuncA_Room_ShadowOffice_TickRoom
+_Acid:
+    ;; Check if acid is currently dripping from the ceiling.
+    lda Zp_RoomState + sState::AcidCooldown_u8
+    beq @done  ; acid drip sequence is not active
+    ;; Drip one drop of acid every kAcidDripSlowdown frames.
+    dec Zp_RoomState + sState::AcidCooldown_u8
+    mod #kAcidDripSlowdown
+    bne @done  ; don't drip acid this frame
+    ;; Calculate the starting point for this drop of acid.
+    lda Zp_RoomState + sState::AcidCooldown_u8
+    .assert $10 .mod kAcidDripSlowdown = 0, error
+    mul #$10 / kAcidDripSlowdown
+    and #$f0
+    rsub #$78
+    sta Zp_PointX_i16 + 0
+    lda #$13
+    sta Zp_PointY_i16 + 0
+    lda #0
+    sta Zp_PointX_i16 + 1
+    sta Zp_PointY_i16 + 1
+    ;; Spawn an acid projectile at the starting point.
+    jsr Func_FindEmptyActorSlot  ; sets C on failure, returns X
+    bcs @done
+    jsr Func_SetActorCenterToPoint  ; preserves X
+    ldy #eActor::ProjAcid  ; param: actor type
+    jsr Func_InitActorDefault
+    ;; TODO: play a sound for dripping acid
+    @done:
 _CoolDownFireball:
     lda Zp_RoomState + sState::FireballCooldown_u8
     beq @done
@@ -445,6 +485,19 @@ _Return:
 
 .SEGMENT "PRGA_Dialog"
 
+.EXPORT DataA_Dialog_ShadowOfficeAcid_sDialog
+.PROC DataA_Dialog_ShadowOfficeAcid_sDialog
+    dlg_Call _DripAcid
+    dlg_Done
+_DripAcid:
+    lda Zp_RoomState + sState::AcidCooldown_u8
+    bne @done
+    lda #kAcidDripFrames
+    sta Zp_RoomState + sState::AcidCooldown_u8
+    @done:
+    rts
+.ENDPROC
+
 .EXPORT DataA_Dialog_ShadowOfficeFireball_sDialog
 .PROC DataA_Dialog_ShadowOfficeFireball_sDialog
     dlg_Call _ShootFireball