"Are they currently distracted? We could sneak past them." Feu asks. "Not to mention, there might be another goblin we can't see. I'd be bad if they suddenly someone their friend passed out."

"Lets sneak past"

Rweni puts her slings and magic stones in a pouch and slowly, with Feu, makes her way underneath the bridge. She places each foot gently on the cavern floor below careful to not make a sound.

Stealth: 11

(No need for further Stealth checks. You all are still getting the benefit of your high rolls from when we entered until you choose to stop sneaking.)

Three goblins are crouched together here and doing exactly that. It's unclear what they're saying, but they keep glancing toward the chamber to the south as if worried.

(The party is in the general area of the red circle. Please send me a square-cropped image of your character so I can make a token if you haven't already.)

Paren says " I think we're going to have to take them (G2,3,4) out as quietly as possible or through some magic like sleep"

"Considering how loud that waterfall is, I don't think there would be much issue to taking them out." Feu prepares their crossbow. "Just tell me where to shoot if they need a bit more to be taken out."

Rweni lifts Feu’s arms up and points the crossbow at one of the goblins.

She steadies their arm before letting go and  reaches up to Feu’s ear so they can hear her above the waterfall, “There is one right there ahead of your crossbow.”

"Got it. Should anyone try to sneak up on them? Feu asks.

(Good point about the waterfall)

Paren says "We need to take them out at the same moment. 'll sneak up and take out G2. When I do, someone needs to select and take out G3 and G4. Is that OK?" 

"I think that might work. Rweni, Killian, do you have anything to shoot at the other goblins?" Feu asks as they still keep aim.

(Whenever it comes time to attack, it will be a surprise round. Those with darkvision will roll with advantage for being unseen. Those without darkvision will roll normally since being blinded and being unseen will cancel each other out. Once they know you’re there, the unseen benefits will be gone, so make your first attacks count!)

(OOC- Rweni is using the help action for her turn to aid Feu in steadying their crossbow since Feu does not have darkvision)

"Okay then, I'll get the second goblin after Paren takes the first one out. Killian, you aim for the third." Feu prepares to take the shot. "Is everyone ready?"

(Okay, let’s grant advantage to Feu in the surprise round then.)

(Roll attacks. Refer to the info above on if you have advantage or not. If they last more than one round, we’ll worry about initiative then.)

(I'm already going to roll for my attack if that's okay.)

Attack: 18  9

Damage: 4

and with that Paren sneaks in and attacks G2

First attack with hand - Attack: 20 Damage: 7

Bonus Attack with foot - Attack: 15 Damage: 4

(Shouldn't you roll with advantage for both attacks?)

Rerolling with Advantage: 

Hand: Attack: 21 Damage: 6

Foot BA: Attack: 23 Damage: 7