I'm gonna be real here. I feel like something is going wrong. I have 70 fitness the solvent and the chemical and 12 rations and I can't for the life of me find a way to beat the wolf. I'm actually quite bummed out by this.
i guess that you talk about the wilderness part in chapter2? the important thing is to use the defender to block the big attack of the wolf each round (which is his 3rd attack). start each round with lacerate and use tagteam before true shot.
if you still have a problem with the fight, it will be easier to answer in the discord server of the game.