What you need to do is to post on the RuneScape official forum and tell them why you want to go to the MCM Comic Con, follow Runescape on Twitter and Facebook and comment even telling them what you would do for a pair of tickets.
The competition closes on Tuesday 20th May at 11:59pm BST. And it is worth nothing that you will have to make your own way there and arrange your own accommodation and any costs.
Each winner will be rewarded with one pair. Players can enter each of the three competitions, but only be allowed one entry per competition. The winners will be chosen randomly and be provided with a PDF document of the tickets.
Once the winners are picked up, they will be notified the following day. Time limited, so hurry up. Good luck to you.