Maybe this helps: Play warrior not as any other class, but disable autotargeting and try to play it diablo/castlevania-esque.
By that I mean, visualize the weapon’s swing, and try to play while constantly moving, strafe between your enemies, trying to always have as many as possible within your swing range, while staying outside of theirs. Greatswords have a pretty big swing area. Keep your dodge key on the shift button, so you can press it instinctively if you ever feel threatened or surrounded, dodge out. never get surrounded!
I ‘always’ carry ‘Shake it Off’ shouts for cripple, stuns, dazes, knockdowns etc.
And depending on where I am; Dolyak Signet for extra endurance regenaration and critical condition heal.
Next, keep your hammer on the offhand, swap with an easy to press key, so you can always knock down an enemy when you see him make slow’n’big animations. Those often hurt the worst.
My last piece of advice is, take your time to fight enemies one by one, and look at their movements. They always have patterns or unique actions.
Example: fighting harpies, imps, and winged elementals; they sometimes slowly elevate making all your hits miss. now, don’t dodge right away, because he’s gonna do a swoop attack and then fire some projectiles.
EXTRA: I don’t know what armor your wearing, but quality always helps significantly. Always wear armor of your style. If you’re levelling, you can buy cheap pieces at the hearts you complete. Once at 80, fight your way through Orr and get (for example:) Berserker’s Rare/Exotic in the Temple of Balthazar.
Also note the suffix of your armor and weapons. is it designed for tanking, buffing, healing, DPS, critting, condition damage, condition duration etc. Make sure you have the stats that apply to you the most.
