Small but cool optimization suggested by @!!cerpin. If you prejump dash after the fireball to kill the enemies outside GHusk, you'll clear the ledge at the end of the tunnel. I recommend either jumping at the divot in the ground marked in red or dashing at the notch in the ceiling marked in yellow.
Some things about this:
All of these advantages assume you normally wait until landing to dash after the tunnel, which you typically would to make sure you get the geo
Buffering the next dash out of the tunnel with the normal movement will have you dash above most of the geo. Air dashing means you can't dash early, so you can buffer the next dash on landing
Clearing the ledge lets you dash again a little earlier and exit the room faster; looks like roughly 2f/0.04s from my timing
Clearing the ledge also has you land a little further right, allowing you to pick up a few extra geo on average
This is a repost of an old strat, but with a visual cue instead of the weird way I did it before. When you enter the GHusk room, jump ASAP and dash when you meet this pointy thing in the foreground (screenshot). You can buffer your first pogo out of the dash, then buffer a second if the big enemy is facing left (first clip) or slightly delay if they're facing right (second clip) to avoid only hitting the background object. In the latter case, you'll also wanna do a turnaround slash as you enter the tunnel. This will give you at least two extra hits of soul before GHusk and will ensure that the fireball after will kill the big enemy instead of having to hope it'll double.
Greeding this is not always necessary for it to work but is recommended. Less greeding will eventually cause the right case to fail (third clip). For best results on both enemy patterns, the first dash should be as low and to the left as possible while still going over the enemies.
if youre above 6 soul in the tunnel, you can save future nail hits of soul by shooting a fireball backwards to instantly kill the husks before proceeding to do the normal strat for ghusk. unfortunately, there is higher chance of missing geo from the husks as you tend to kill them farther right (idea from @magneticpizza)
An easier way to get passed the husks for the new GHusk strat. Good way to avoid getting owned by the husk hitboxes like 90% of the time and you don't bonk into the wall as often as the other strat. From my timing it might also be a little faster, but timing was kinda weird so not 100% sure. Speed is at least close to the quick pogo dash.
Low soul strat for GHusk. Collects more geo on average, loses like 0.2s-0.5s to the normal strat (timing is v hard bc of GHusk rng), though situationally it should save time depending on how you normally collect that soul. The point where you dash after the big jump is kinda specific, since it's mostly what determines whether the pogo dash will make it into the lil tube thing https://youtu.be/kGir7C5M5bQ
Different pattern (2 upslashes) that sometimes saves the double when you get really big jumps (ghusk jump distance is rng) and also should save a bit of time because you don't have to walk as far to aggro her the next time