Armored Core 6 - Destroy the Ice Worm - S Rank
The most annoying S Rank I've had to do currently. Requires you to have the run incredibly optimized and to have near 0 errors when it comes to your Stun Needle shots. I'm pretty sure I skirted the line between A and S this run; that's how tight you need to be on timing. The issue isn't the first and second shots because they have vulnerable scripted attacks that are easy to line up for; it's the third and fourth since there's only one scripted attack that's an incredibly difficult line up due to randomizing where it pops out at and the rest of the attacks being random after. I shit you not it took me 40 mins of straight resets to get.