Update (6.20.20)

By popular request, a MW2 BB mod is available for download!

This mod replaces MW5 dialogue with the BB voice from MW2 and MW2:Ghost Bear.  Like my MW2:Merc mod, some BB voices were spliced together to match MW5 BB dialogue.  A few notes:

- The MW2 BB does not say the "reactor online, sensors online, weapons online" dialogue.  It does, however, say "all systems nominal".  I used MW2:Merc BB dialogue in place of the missing dialogue, and modified the audio to better match the mechanical sound of the MW2 BB.

- Removed "ammo/jumpjet depleted" dialogue. No comparable or usable MW2 was found. However, "ammo/jumpjet critical" is used in place of the "low" dialogue.  Plus, I don't think you need a BB to let you know you're out of jumpjets and ammo :)

- Removed "command console destroyed"

- Kept "base is being captured" from MW5.  If anyone has the MWO sound asset for this, let me know!  I'd love to replace it.


Enjoy!

PS: Shoutout to modders Kh0rn and Nick Sherman - GenericMeds for the help/inspiration!
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Background
The MW2 games were some of the first PC games I ever played, and I’m a particular fan of MW2: Mercenaries’ Bitchin’ Betty.  I have no prior modding experience, but I felt compelled to learn how to mod if it meant the possibility of hearing the voice of my childhood one more time.

Obstacles
As other modders have mentioned, replacing MW5 Betty dialogue with MW2: Merc's is not a straightforward task for a few reasons:
- Certain BB words present in MW5 do not exist in MW2:Merc, or cannot be isolated with sufficient quality to use
- Certain BB phrases in MW5 do not exist in MW2:Merc, but can be compiled together using snippets of MW2:Merc BB audio or replaced with comparable MW2Merc BB dialogue or game sound
- Modding requires learning Unreal Editor and Wwise

But, where there’s a will there’s a way!  The most difficult part was what to do with non-existent words.  For that, a voice actor was used.  Not a perfect solution, but necessary in my view.

With that said, below is a detailed breakdown of how each and every MW5 Betty dialogue was replaced. 

Bonus
I also included a separate “beta” version of a cockpit sound mod that replaces several MW5 sounds with MW2:Merc sounds
- missile locking tone
- missile locked tone
- “objective successful”  (when completing an objective)
- "image enhancement" (when turning on night vision)

Installation
As with other mods, extract the folder into your MW5Mercs/Mods folder and activate them using the Mods menu in the game's title screen.

*May conflict with sounds mods that modify BB, Mech/Cockpit sounds.

Changes (watch video to hear changes)
MW5
- “ammo depleted”
MW2Merc
- “ammo” (MW2Merc Betty)
- “depleted” (voice actress used)

MW5
- “ammo explosion detected”
MW2Merc
- “internal ammo explosion detected”

MW5
- “ammo low”
MW2Merc
- “ammo” (MW2Merc Betty)
- “low” (voice actress used)

MW5
- “base is being captured” 
Left unchanged. No compatible MW2Merc Betty audio. *If anyone has the MWO betty audio for this, I can add this in.

MW5
- “emergency ejection sequence initiated”
MW2Merc
- “ejection sequence initiated” (MW2Merc Betty compiled from different snippets)

MW5
- “heat critical”
MW2Merc
- “reactor critical; shutdown imminent”

MW5
- “incoming missile”
MW2Merc
- (incoming missile warning sound from MW2)

MW5
- “jump jet fuel empty”
MW2Merc
- “jump jet” (MW2Merc Betty)
- “depleted” (voice actress used)

MW5
- “jump jet fuel low”
MW2Merc
- “jump jet” (MW2Merc Betty)
- “low” (voice actress used)

MW5
- “new target acquired” & “target acquired”
MW2Merc
- “target”

MW5
- “reactor online; sensors online; weapons online; all systems nominal”
MW2Merc
- (replaced with MW2Merc Betty)

MW5
- “out of bounds”
MW2Merc
- “warning: you are leaving defined mission zone” 

MW5
- “overheating”
MW2Merc
- “internal heat at 700 kelvin”

MW5
- “override engaged” & “override shutdown”
MW2Merc
- “emergency heat shutdown overridden”

MW5
- “system offline”
MW2Merc
- “shutting down”

MW5
- “targeting computer destroyed”
MW2Merc
- “targeting computer” (voice actress used)
- “destroyed” (MW2Merc Betty)

MW5
- “target destroyed”
MW2Merc
- “enemy destroyed”

MW5
- “weapon destroyed”
MW2Merc
- “weapon destroyed” (compiled from different snippets)

MW5
- “weapon explosion detected”
MW2Merc
- “weapon explosion detected” (compiled from different snippets)

MW5
- “weapon jammed”
MW2Merc
- “weapon” (MW2Merc Betty)
- “jammed” (voice actress)