Any opinions on the enemy in Mass Effect 2 which you least looked forward to fighting? For me – and probably for many others – it was the Scion. That cheating weapon of their's. Did you know that you can give Shepard a "ScionGun" with the right modding? It's cool, but unfortunately looks and has the same amount of ammo as your Grenade Launcher. And it's nowhere near as effective, only doing 350 damage instead of instantly taking out shields. And I'm not sure it penetrates cover. Still, made me laugh the first time I fired it.
See the amazing Scion Gun here: