Didn’t succeed at putting the explosives in the tunnel to make it blow !
I also have the same problem. I pick up the crate, run through the corridor, dribble the monster, don't know how to place them. Tried to aim for the center (between the tentacles): doesn't work. Tried to put it down, run out of the corridor, activate that kind of detonator where I picked the crate: doesn't work. Tried to put down the crate and run upstairs: doesn't work.