Just checking in to see if you made it past those roadblocks?
The Sewer of Horrors is designed to be a brutal, end-of-content type dungeon. There's a few nasty tricks in that dungeon, including very well hidden levers to open the poison gate. A lot of players have died running from poison golems trying to find those levers.
www.exiledkingdoms.com
As for the Ark, it's less about your level, than your build and equipment. What's your lightening resistance? Do you have either the Arc Googles or Strange Hood (both protect you against the floating red balls). As a blow player, have you found a Arc bow yet (random drop in Ark chests?)
Also moved thread to General Forum as it's a request for game help.