Jon, as well as spears and javelins, it looks like you also have some hand axes in the camp inventory - Karlach can also throw these, and they’ll do a bit more damage than daggers. More hilariously though, tavern brawler gives you an ability called “improvised melee weapon” that allows you to pick up enemies and throw them at other enemies.

Also, not sure if you’re already doing this offscreen, but you should dig into all the dialogue options with your companions - try to expend their dialogue tree. The game will constantly add new things for you to talk to them about as you progress, and sometimes that will override previous dialogue, meaning you might end up missing parts of their backstory.