Killing Piggsy
To finish off Piggsy, after you stab him three times go up the stairs and lure him onto the grate at the top level.
The grtae will bend the first time and he will run away. Lure him back upstairs and onto the grate for a second time and he will fall through. Make sure that you're also not on the grate or you will sufefr a similar fate as Piggsy.
