Firstly i met the vampires in the gateway, and defeated them with +1 weopons, just met them on the bridge and guest what they wipe me off the face off the earth very rapidly, what gives? do they get harder each time u meet them????
Secondly when i go to the gateway and leave why will it only let me go to Trademeet? and when i go to trademeet it will let me back to town or go toW indspear Hills, i want to go to de,arnise hold, how do i get there????

The vampires in the bridge district are a different set. There is no difficulty progression with vampire encounters in the city, although later you will face more difficult vampires elsewhere.
Have you already spoken to Nalia?

thanks for the info about vampires, i got round them by lying( told them i was not part of the theves guild, anything to stay alive ) worked this time , ill just have to wait and see.Worked out how to get to the other places ( using the wrong exit out of the gate, lol lol ). And yes i have spoken to Nalia that was the quest i was trying top go on.Thank you again.