In the process of cutting nearly 3 minutes from The Package SLASO time, RC Master plays a bit of Covenant Bowling: using the Banshee and Wraith as wrecking balls just as much as he uses their guns.
The new time is 22:17.
In his own words:
A neat little trick I learned when killing the Tyrant guns with the Scorpion is that the second one's core can be targetted directly from the path leading to Sword Base. On lower difficulties this isn't helpful since you can kill the guns quicker by just hitting the gun itself. However on Mythic/LASO with the Mythic Skull on, it takes 13 shots each to bring them down that way, so it ends up being slightly quicker and easier to hit the core of the second one directly.
Inside the Sword Base atrium (a fight I abhor), I leave just one Camo Elite alive and make a dash off the centre art piece through the windows; skipping the General entirely.
Once in the Glacier, I grab a Banshee ASAP and am very aggressive with it: using it as a battering ram on the convieniently lined up Covenant troops. This saves A LOT of time in killing the enemies and I can get the Wraith pretty quick.
Once I have the Wraith, I use a strategy that is a lot more aggressive than what most people use when they do this mission on Mythic: I stay down in the thick of it rather than up near the starting point.
The turrets in this area do help a bit, and I believe they are part of the activation for the second wave coming in, so it pays to activate them and keep them active; they even bring down one of the Hunters for me!
~ RC Master
Watch this Speed Run