Kashi Kshetra

One who dies in a kashi kshetra attains the Moksha! This is true , Lord Shiva has spent entire kalpa praying vishnu sahsra nama day and night in this place, When Lord appeared he asked a boon for the benefit of mankind that he who dies here whether it be a insect animal or man , be granted moksha . Lord Ram granted that of those who die here he will attain moksha for whom the Shiva himself will give upadesha of taraka mantra personnaly in his ears. 

This mantra was given to Shiva by Bramha . One who attains such a good fortune will live as sayujya of Shiva in amukta kashi and finally attain sayujya of Vishnu in Vaikuntha.

Tripur vijay

Shiva killed tripurasur . Vishnu and others became his weapons . This incident some highlight to exalt Shiva. But Vishnu and others give weapons their tejan[ agnigolak]  . As this weapon was under the supervision of Shiva it can be concluded these being subordinate to Shiva . But this is against vedas . This subservience of weapons has come as a boon to Shiva as a result of reciting Vishnupanjar stotra . It is not a natural characteristics of Shiva. Also Shiva kills Tripurasur by recting Vishnumantras . He asks for a boon to be the head of all animals , pashupati and being a Devashuka I should be able to kill Tripur . These are all well recorded in Kurma Purana.

The misuderstood portions are actuall from Kashikhanda of Skanda Purana which are deemed as Tamas Purana. Karna Parva of Mahabharath also stresses that it is Vishnu who is always present in Shiva [ and also by savouring the rasayana during vrushabhavatar as per Bhagavat ] Shiva could vanquish Tripurasur.