I have found The ending with sadness soundtrack in “thunder force 5” so It made me a little cry (because its soundtrack). And this is the last letter that I found in thunder force 5.
-Discussion: The Last Letter cutscene and soundtrack (Good Ending) will play if the player can defeated The Guardian (Final Boss) in 3-5 minutes and after the player defeat her. She will send The Last Letter to the player.
(Well, before you read the last letter, you should open This OST to get more feeling while you are reading the last letter. (The Sadness feeling))
"I am cyborg humanity,
A cyborg world.
And my name is the Guardian.
Human, listen to me.
All the things that surpass human power have been destroyed by you.
Their number was too great, but has now been reduced to the proper level. The world will continue as it was before.
The living creatures of this planet will continue to rejoice in or fear battle and die in or live by combat. But even in a world of minor warfare, one oversight could mean…
RVR-01 GAUNTLET . . . Destroyed
RVR-02 VAMBRACE . . . Operational
The existence of Vambrace will once again cause humanity to embrace mass death and destruction, Just as Vasteel did, this I know. You know it too, do you not? Human.
If you wish to safeguard the future of humanity, you must make sure humans can never again gain access to Vambrace
May fortune be with you."