On my first play through of Mass Effect 3, the ‘Rannoch Reaper boss fight’ is the only time I had trouble. I died more times than I can even remember. I essentially completed it, through sheer luck…or so I thought.
I’m now playing through on insanity, and I’ve had even more trouble defeating this bloody Reaper. Until…I finally stopped being so dense, and realised that when you aim the targeting laser, there is a small laser sight – that has to be aligned perfectly with the Reapers ‘open eye’ thing.
You do need to strafe. On the first assault – move right, until the Reaper is locked on course, then roll left again, target – rinse and repeat. Once you’ve got the laser ‘locked in’, make sure the small red laser sight is directly targeting the centre of the Reapers ‘eye’, while it’s firing. Second assault, exactly the same method, but go left, then roll right. Third assault, move further back (I started out quite far forward), move right, roll left. Laser the heck out of it. Final assault just target the ‘eye’ thingy, and hey presto! It’s dead.
I know that’s not a very good explanation, but you can figure it out yourself (the strafing pattern) – just remember to get the targeting laser dead centre on the firing Reaper ‘eye’ bit. I had tons of trouble with this ‘boss’, until I realised what I was doing wrong. I imagine I’m the only one who struggled, as much as I did. But just in-case anyone else has had as much bother, the advice is here =)
Also, it’s slightly ridiculous just how happy I was, once the big guy finally went down. I may have done a small victory boogie.