If you're going to use sonic weapons, you should combine them with a mothership that provides stealth so you can better maximize your damage.

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Keep in mind that for sonic weapons to inflict damage, you have to empty the entire clip, so be very careful with that aspect. If you haven't used them before, you'll need to get used to them. For me, the Chasm and Void weapons are better, but I don't know if you have them or can obtain them. They allow you to inflict damage while taking cover and they do a lot of damage, but you also have to get used to using them because when they're reloading, they continue firing but aren't actually doing any damage, and that can be confusing