You are not equipping the runes. There is a message saying that, to make sure people don't miss it, You probably skipped it.
Also, collect the herbs and use your skills wisely.
In the world of SC, runes and relics/artefacts is the way to become truly strong. Be sure to equip them, they are spread around in red boxes.
Edit: Don't skip the messages/tips that come with a bell, they are instructions for the game. When you have access to the first tribe, there will be an option there to buy better healing items as well. You will receive another tip there.