at the annex alarm with those doors,where you need that mud to fry sligs with security gates.....
afther reading treads about how mutch oddworld games are cancelled....it made me feel like walking into a bone drill
EDIT: who can at first path,in ao the mine field where you need to jump over it and then pick up grenades to clear it for entering the secret area,i managed to blow all 5 or 6 mines with only 1 grenade