I would like to know, if someone hacked me using a hacking tool, would i be able to see the hacking tool's ip address or do hacking tools have built-in TOR or use no log Vpn?

how can i potential trace back an IP , if i happen to know a particular IP (my frnds)
i tried using the email headers , but  wat i observed was when a mail is sent from gmail to gmail . the google mail sever actually uses a virtual PVN and the client IP is replaced by the Google IP (or watever it technically stands for) .

IS there any hacktool that i can pin point trace a person who has sent me a mail.. ?

As far as email goes, you could try having a read response sent to you.  Of course that does ask before sending a reply though.  There are ways around that like the service provided by readreply.com. 

You can trace but you are going to get an geographic area.  Those traced are thraced with the assistence of the ISP.  The ISP handles the allocation of IP addresses and "knows" who has what address.  If it is a customer of theirs, they know who that customer is and probably have a mailing address for the person.  IF you have the IP address, you can use a utility like visual trace rout to see about where the address is.  You will definitely get a country and may get it narrowed down by as much as a state or even city.