Resident Evil 4 Remake - Double Garrador Cheap Strat

Slightly scuffed due to my impeccable aim. This would likely go a lot faster if you had the bolt action with the exclusive. I'll outline the general Idea:
1: Enter the room, and kill the 3 enemies. Space out your shots so that the Garrador's break free.
2: As soon as the Garrador's break free, sprint left towards the side hallway then crouch down. Move slowly until you get to the archway, and wait before exposing yourself. (There will be enemies that are moving towards the entrance that will spot you prematurely if you move out too soon, even if you're crouching.)
3: Position yourself and aim at the bell in roughly the same spot I do. I aim for the "lines" on the bell for a height reference.
4: As soon as the armored Garrador's weak point moves over your crosshair (it should line up on its own), shoot then throw a flashbang. Because I'm using the stingray he didn't die instantly, but he likely would if you had the Bolt Action + exclusive.
5: As soon as the armored Garrador is dead, pick off the other one quickly with the rifle. His aggression towards the bell lasts a while so you should have enough time before the enemies begin to hound you. Again, me using the stingray was a handicap here.
This method is provided as an alternative to a friend of mine's strategy, which involves brute-forcing the encounter by blowing the Garrador's up with 3 heavy grenades. Hence "cheap", since this won't break the bank. However, it's undeniably more difficult do do it this way.

[@Radioactivesplinterz]

There's also room for improvement, probably. If you had a high enough fire rate and good aim, you might be able to expose both parasites before throwing the flash grenade. With the bolt action + exclusive, this would kill both instantly, and only cost 2 rifle rounds and a single flash.

[@Razruer]

Clean