[Garuda]'s base kit makes her one of the strongest scaling solo warframes in the game. Unfortunately it doesn't give us much room to swap mods around because she needs so many very specific mods in order to make use of her gimmicks.
Range is increased a bit on this build so we utilize nuking abilities. Breach Surge is chosen here because it's the most unique and powerful combination but Expedite Suffering and even Ensnare/Larva work. If you are running a smaller killbox style build replace [Augur Reach] or [Stretch] for [Rolling Guard].
Blood Altar is replaced since there are many ways to get your health back for Bloodletting. Running a Bleeding Dragon Key allows even a few health orbs to completely fill your energy bar.
[Enemy Radar] mods help us to find enemies. Seeking [Talons] is a cone and not a 360 degree attack so you still need to position yourself correctly.
[Quick Thinking] should always be paired with some form of stagger resistance or recovery. [Primed Sure Footed] is the strongest option but you can downgrade to [Sure Footed] or [Pain Threshold] if you don't have it yet.
[Natural Talent] is needed on the build in order to abuse Seeking [Talons]. The range is condensed into a cone pointed forward on your screen. It already has issues in melee range against large groups and without [Natural Talent] that just becomes much worse.
Arcane Pulse and Arcane Velocity are both flex arcanes. They can be replaced with a lot of different options depending on the weapon you're using or the content you're running. Arcane Velocity is run primarily because of the [Kuva Nukor] synergy but you can replace it with any other arcane that increases your damage. Arcane Pulse gives us a full health bar after picking up a health orb which we then convert to a full energy bar with Bloodletting.