So I'm at this mission, trying to find Liara what's-her-name... I landed on Therum and went through a bunch of Geth. At some point there is a cutscene with a lizardlike Geth and then this huge cannon-wielding Geth lands right in front of me. I tried to beat this like 20 times, but I die almost instantly before reaching cover. Should I not be here yet? Should I level up first? What's the deal with this? The game had not been hard until now. It's from the first missions right after you get control of the ship, so I don't think it should be this hard. Perhaps I'm doing something wrong? Thanks