Hey! Been trying my first submission, the thing is i can't get the first Rilgar skip consistently because somehow when i kill with the sheepinator the 4 guys and the 2 tanks the yellow barrier doesn't go off, any clues on why is this happening?

You may be aggro'ing some of the amoeboids in the maze, in which case you have to kill those too. I forget if sheepinator counts as a kill, been a while since I played.