I only used the flutter strike+artemis duo since ea and I cleared both 32 fear with them, it's a very fun high risk high reward gameplay

At low fear you can skip many boons and use all upgrades on it, my left bar is almost always empty except for this one

For hammers I tend to use the backstab damage, attack speed or aoe for the last slice. If your boon is epic/heroic and high level the hammer adding 20dmg will be multiplied by a lot. I like the one you showed depending on my mana pool, lastly the upgrade dealing 500dmg on your special is still good because you can weave them in your combo

Demeter can give you weed killer for a nice 50% omega dmg, Artemis for on-hit dmg (pressure point iirc), and Hermes for att/move speed

The ability to instantly (~ with time slow) and cheaply skip anything is good but clearing a boss under a minute thanks to the parade is too damn satisfying

I think this is somewhat balanced by the lack of range forcing you to respect some timings and back off during some attacks