thanks for your comment, during the week I will upload a complete video killing QP, but if you want you can see the video where I killed QP with DK ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-1h9g56UotG8.html
if you want to kill Undyin and QP you have to have permanent stun, and that is achieved with the two troll ultis and other abilities that give stun; you also have to have enough CD reduction for the skills.