Don’t get too precious with your resources

This goes hand-in-hand with not getting too attached to a specific build, but broadly, don’t be afraid to spend your money, supplements, and weapon upgrades when you get back to the hideout. If you survive an encounter, the rewards you get are pretty generous, and you can usually purchase new upgrades and supplies every chance you get based on those alone. So don’t hoard those in your backpack. Try to have at least one or two new tools in your kit next time you head out.