There is a boss named The End, the fourth one in the game.
https://anonfiles.com/We33P0fdz1/VMC0_ps2
Here is the save card. The last one is after the tunnel and number 04 is before (for debugging purposes).
Found another bug, after beating The End there is a crash while loading the tunnel with BFL (big freaking ladder), fixed it by passing the tunnel on pcsx2. Haven't found the log though.
Here is the guide how to fix it yourself
Hi, i am tying to run mgs 3 with fixes above, i've made a pkg with star ocean v2 emu but it just wont start, it just sits idle on the splashscreen. I am using PS2-fpkg. PS4 firmware is 6.72.
I've also checked the package with ps4pkgtool and config-emu-ps4 inside is different from that i provided...