Glukkons are quite useless in order to get anything done... Good luck that the Sligs are even more stupid and listen to the orders of the Glukkons. I just imagine, what happenes, if the Sligs get smart enough to not follow orders anymore... Maybe something new for another Oddworld advanture
Well, after I finally finished Abe's Exodus I also just rescued quite a few Mudokons (around 180)
It was just enough to get not the bad end...
Don't worry, just continue to play, and save enough of them *hihi* The secrets in here are quite more difficult to find AND to solve.
Good luck with your walkthrough.