Rithrynn immediately spotted the grenades as they were tossed from around the corner further up ahead, landing close to Sharon and Liaena.

"It's gonna blo,-" Rithrynn screamed out loudly as she stumbled back against the ground, crashing into the sentinel behind her. Just as the burning fuse reached the entrance to the first metal ball, Vashi had stepped forward and pointed her staff forward, erecting an arcane shield in front of the group.

[b]*BOOOOM!*[/b]

The explosion went off with a bang. Vashi's shield absorbed a lot of the explosion and shrapnel, but some of the shockwave went through and knocked the first ranks of elves, including Vashi, on their asses.
A sour smell of sulfur and spent gunpowder now mixed with the stench of the sewer, doing nothing to make it smell any better. The occasional brick fell down from the wall above their heads alongside a heap of dust that had been loosened from the blast, as there was a small mist of smoke that rose from the area where the grenades had gone off. The stone plate of the walkway that the grenades had gone off on had splintered, and half of it had fallen into the trench to the side, revealing a good amount of squeezed and destroyed insects beneath the tile.

"Get up! We're being attacked!" Serphia called out. She had been standing further behind the group when the explosion went off, and short of being surprised by the large bang was unharmed. She grabbed the first sentinel who was sitting on her butt in front of her and pulled her back up to her feet. 

One of the sentinels suddenly kicked against the wall next to them and made a running jump across the filthy sewer trench to reach the walkway on the other side. The sentinel made the jump perfectly, except when she landed; her feet slid on the slimy, moldy floor and she crashed into the ground. 
Despite the clumsy fall, she was quick to recover as she staggered back onto her knee with her bow and arrow aimed at the corner from where Smokey had thrown the grenade.

"Give me that shield!" Serphia said to one of the sentinels carrying a spear and a large, elven shield. The Sentinel immediately passed her shield over to her Captain, who equipped it on her arm and faced it towards the further up ahead. The elven shield was tall, enough to cover most of the Captain as she hunched behind it. Covered in a black metal surface, and adorned with white silver linings, patterns and the occasional feather and trinkets in the corner.

With Serphia advancing on the corner, supported by Vashi behind her and covered by an archer on the other side of the trench, Rithrynn finally managed to recover from the initial blast and stagger back onto her feet. It felt as though she had almost been hit by a lightning.
Although Vashi's shield had done a good job at deflecting most of the blast, it had still been close enough to leave Rithrynn feeling slightly phased. Rushing over to the heap of limbs that was Liaena lying on top of Sharon, Rithrynn knelt down next to them.

"Are you guys alright?" Rithrynn said as she grabbed Liaena, shaking her to see if there was any life in her.
"We need to go! Come on, Li!"