You specifically have to deliver the killing blow. Your summons count toward your kills, but Wounds that kill do not, even if you applied them.

Honestly this PQ is best done on casual mode solo since it's such an annoyance to ask my party members to let me make the killing blow on these enemies.

You have to land the killing blow, that applies to all similar PQs.

For &gt;!The Perfect Poison!&lt; Quest, it requires killing X number of Y Monsters.  Are these party kills or are these kills my character has to get (In other words, my char has to deal the killing blow)?

Would this apply to any other Personal Quest in which the character requires killing X number of Monsters?

Personal Quest 533 Question