edmundus

I was thinking the SAME EXACT THING.

Judging by when Trevelyan delivers his lines (and my memory of the game), I'm pretty sure the game guides they use in this episode are slightly wrong about the boss damage. Here's how I think the cycle actually works:

• When Trevelyan takes any damage, he becomes invulnerable and starts running to his next waypoint.
• If you get too close to Trevelyan before doing him damage, he will start moving to the next waypoint anyway.
• When Trevelyan reaches a new waypoint, he becomes vulnerable to damage again.

Due to the second point, in the frenzy Dan would sometimes set Trevelyan going before he'd received any damage. In these instances, I believe he could still "catch up" damage-wise by shooting Trevelyan once before he reaches the next waypoint. This is what's happening when Alec occasionally delivers a line while running.

I believe the standard plan is to always shoot Trevelyan before he starts running, but if he does set off before that, I'd recommend putting a single bullet in his back so that you don't completely miss out on the damage-dealing opportunity.

Other than that, my only other recommendation is that at the start it might help to angle up a little with C-Up so that the distant end of the first walkway is closer to the centre of the screen – I'm guessing that would make the auto-aim more likely to work at greater distances. I remember learning (or at least thinking I'd learnt) what part of the blue sky gradient I had to point at to have the best chance of killing that first guard.