Completed this achievement using this:
http://strategywiki.org/wiki/Sam_%26_Max_Episode_203:_Night_...Firstly use all the items on the table next to frankenstein first then you must find all 4 pieces needed that weren't on the operating table.
'Zombie hand','Lincons brain','Chocolate heart','golden heart'
The zombie hand which is found running into the 'stinky's cafe after becoming a zombie. Get the hand to shoot left so it would eventually bounce back into the cake.
As zombies to get the 'Lincoln' brain go to stakes in the mansion where you was killed, aboe it show the end phrases which is half there which can be used on the DJ dance buttons.
Also to get the chocolate heart you have to frankenstein go to 'symbils' place where there will be 3 people. Go for question 3 then soon as the they stopped talking talk to the person on the far right, he will walk off and then go for the heart. After that's done head back to the mansion and use the chocolate heart on frankenstein.
To get the golden heart you must look at the spell book in the trapped room near the entrance then complete the Desoto challenge to get the 'super antenna' then cut them with the bolt cutters and head back to the torture chamber to get the golden heart converter fixed and use the power switch like you did with frankenstein then add the heart, you should get a gold heart. Once that's done just give it to frankstein. Achievement unlocked.