Wanting suggestions for build
You should checkout a previous thread where I listed the current PvE meta build.
https://forum-en.gw2archive.eu/forum/professions/warrior/need-help-finding-a-warrior-pve-dungeon-build/first#post4096207
The PvE meta for pretty much every profession is the full Berserker approach. In PvE you don’t need more than your base armor as long as you dodge and pay attention to attack animation. You should be focusing purely on maximizing damage and group utility. The only time I’d recommend gearing defensively is when you are just starting out and still learning the basics. It is best to stop using it as soon as possible or it can become a crutch later on.
I highly recommend you go and get yourself a full set of Berserker armor/weapons/trinkets. For runes you want to go with [Scholar] and sigils [Force+Night] on the Greatsword. What you use for your offset is up to personal preference. Axe/Mace is the most commonly used, but you will mainly be camping Greatsword so its not that important. Just stay away from Hammer and Shield since CC (stuns/knockdown/daze) don’t work on boss Defiance. If you feel like you want a block option bring an offhand Sword which is alot better than shield.
If you’re worried about spending alot of gold on gear you can farm CoF paths 1&2 for tokens to trade in for armor+weapons. Both paths are fast and easy so it should only take about 1-2 weeks to earn enough for a complete set. You should also net a fair amount of gold from those daily dungeon runs as well.
http://wiki.guildwars2.com/wiki/Flame_Legion_armor_
http://wiki.guildwars2.com/wiki/Molten_weapons