If your constantly training with someone w/ mw , max out Fake/venom (21), if your solo , get 9 MW then fake/venom(21), Assassinate ain't needed to train. I don't even use it unless im at pap/manon/HH or waiting for spawn =x dont get me wrong, its a great skill, but it is not gonna help you level at all lol. After fake/venom. Taunt or assassinate. its all up to you. Taunt will pretty much help you level faster tho.
****I say (21) , because 4 Second poison is decent enough. I would reset my sp so i can use the extra 9 for taunt but I cannot afford it. Also, around 16x you can start 2 hit BS skeles, which makes venom useless at later level's****
****I say (21) , because 4 Second poison is decent enough. I would reset my sp so i can use the extra 9 for taunt but I cannot afford it. Also, around 16x you can start 2 hit BS skeles, which makes venom useless at later level's****

