My recommendation would be to put a little less focus in shield pummel and battle tactics at first. Don't underestimate a maxed out Fast Metabolism - you can view it like a 5 point damage reduction per turn against all types of damage, and that can help a lot, at last up through Dreadfell. I've played a lot of bulwarks, and my most successful one was the one I posted a few days ago (
http://te4.org/characters/21953/tome/26 ... f729ac2673 ). After a whole lot of trial and error with builds, I realized with this one that a balanced approach worked really well for the early game. Every level I allocated stats a 1/1/1 to str/dex/con, until I got to 50 str with gear; at that point, I started putting points in str every other level and using the freed up points for extra constitution.
Also, don't be afraid to put 1-2 points into Last Stand. That skill is amazing for boss/rare fights, as it gives you a ton of extra health that combines well with the Vitality skill. The stats I looked for the most on gear were +str/dex/con (obviously), +max life, +life regen, and +physical damage. Once I got the sanguine skill, my normal regen was about 12 HP per turn, and when Vitality proc'd, it just went to absurd levels; plus, with last stand active, I was getting over 400 extra health (which also meant that I was proc'ing Vitality 200 HP sooner).
As far as strategy goes, a really good way to beef up your offensive power is to use your counterstrikes from blocking to set up your assault. This gives you a HUGE boost to damage. Additionally, since assault makes it very easy to do critical hits, look for weapons with useful on-crit effects (crippling and wounding are both exceptional in this regard). Using a disable-on-crit weapon with your block/assault combo will really put a damper on whatever you're fighting.
As others have said, another thing you need to do is max rush. The biggest weakness for bulwarks is ranged casters; being able to close the gap on them immediately is pretty much essential. It took me many failed builds to figure this out; previously, I'd try tactics like blinding them with sun infusions or luring them around corners, but eventually those tactics just aren't effective.
A last note, don't rush Power is Money so fast. It's an amazing skill and should be maxed over time, but in all likeliness, you weren't getting the benefits of the last few levels of it that early on due to how much gold is required to see the extra boosts from leveling it up. I would put only 2 points in that until after Dreadfell, and use the other points on stuff like Vitality and Weapons Mastery.
Hope some of those tips are useful for you. The only other piece of advice I can offer: Pray that the RNG gifts you with the Spider-Silk Robe of Spydre. That robe makes bulwarks pretty much unstoppable early on; +15 armor,
+40% armor hardiness, +10 defense, +5 con,
+10 to all saves, and +30% nature resist. Absolutely amazing, and I got mine early into Tier 2's and wore it all the way to my demise in an orc pride.