Eight things I wish I'd known before playing 'Horizon Forbidden West'

However, there's a slight catch: Each skill tree is tied to two weapon types. That means if you have a specific weapon in mind that you want to beef up with new abilities, you're going to have to pour skill points into whatever skill tree it's tied to before the option becomes available to unlock those techniques. Techniques for the Blast Sling, a slingshot players will recognize from "Zero Dawn" that fires bombs and deals damage to a large area, are available through the survivor skill tree -- another reason to invest your points there first, as Blast Slings are some of the more powerful weapons you gain access to early on.