That with 5 intelligence and "volunteers" is done. Long time ago i remember having futuristic serum but i have no idea how i unlock it
I believe that should actually finish unlocking the tiers of research.
There are also prerequisites within the tiers. For example, you probably cannot unlock "futuristic" without unlocking all previous "production" tiers.
I don't know if that solves your problem. If not, I'm at a loss... though, I could look at your save file. I've played through this game several times when there were new releases, so I've got a pretty good idea how to get
everything, but not necessarily how to get a
specific thing.
They're located here, I believe:
C:\Users\yourname\AppData\Roaming\RenPy\LR_2_Proto-1493018508
I deleted saves from there and they did not affect the saves available in-game... but they are being written there... maybe as a backup?
Anyway, deleting files from
this location (also) actually removed them from in-game: X:\wherever_you_put_the_game\Lab_Rats_2-v0.30.2-pc\game\saves