Also try varying your fight plans where possible.
For example, you might try rushing in, only to find that your character immediately get floored. Next time you might try hiding your group behind a group of trees, getting a key shot off at the start of the fight, then waiting for your opponents to close in.
Strategies can be as simple or as complex as you like. Maybe as they are coming around the corner, the hits start landing too fast. Okay, lets use a steamcloud (arrow) to obstruct their ranged attacks, or just place some fire on the ground to make them approach more timidly.
Your warrior might idle a bit while you set up the fight to your liking, that's fine, they'll become useful as things get closer (you don't always need to take the fight to them).
