I created a thread that discusses the hp issue with Sorcs.
http://forums.ddo.com/showthread.php?t=176040
If you read through this, you will see a number of very helpful comments from the community about items to wear, tactics to use, and the like. It also provides some build guidance for the next Sorc you might make in the future.
For the Shroud:
Part 1: Sorcs usually hunt mobs around the portals. If you have high DCs (and high spell pen), your finger of death should hit almost every time (consider taking all spell pen options if you don't have them). If not, move around a lot while you are firing at the bad guys and you will avoid most damage. Consider carrying enervate as a spell (or, if you can afford it, on scolls) to make your insta-kill spells hit better. For the orthons or devils, a single enervate or two followed by a finger should do the trick. Don't grab any agro on the opening fight. Maybe some crowd control at most (a heightened web works well).
Part 2: With a low hp sorc, don't grab any agro. Use crowd control to help the melees (heightened web is a great option). If you are getting random agro from teleporting devils, use diplomacy to shake it--if you have this skill.
Part 3: Be careful to avoid the blades and avoid the runes on the floor. People are expected to run water to the rooms--but consider not running water as the blades might do you in.
Part 4: Don't grab agro on the trash mobs. Crowd control only. Use diplo if you pick up a devil agro (or just run it to the melees if you don't have diplo). Buffs can make you nearly immortal against the pit fiend. Carry cold shield (and always keep it up), get fire resist (buff yourself, get buff from another, or wear item), carry fire protect and put it in your hot bar. With those three up, a meteor swarm will do essentially no damage to you. As soon as you are hit (watch your protect spell icon), spam protect on yourself again--he can't hurt you. Stay away from the blades. With tactics, you should be untouchable in part 4 except in the rarest instance when you get hit with multiple, near-simultaneous meteor swarms (stay moving to reduce this risk).
Part 5: don't get any agro on the 4 red-names. Just buff people and let the melees take these down. Same tactics as part 4 on the pit fiend.
As you get your hit points up, you will find you can be more aggressive. A high hp sorc with self-healing capability (reconstruct or heal scrolls) can take on anything in the shroud, with practice.