Val's prepared arrow bathes the room in Sunlight. Vlad screams in agony. His skin begins to sizzle and smoke. Realizing that he's been caught here, he runs to the nearby window, smashes it with his hands and then jumps out of it to get outside.

Party's turn.

( No initiative? No surprise round for the rest of the party? ) 

((I already rolled Initiative. And Val didn't even have a surprise round either. His arrow was more a Ready Action thing. Vlad beat the whole party in initiative with his 22. ))

((Stupid vampire haha. Can we have some distances? )) 

Sure. There's like a 30ft distance to the window (It was closer to Vlad so he managed to jump out of it). Then there's the 20ft drop to outside.

Val will run up to the window and fire at Vlad if he sees him. 

( Att: 24 damage 10 piercing if he sees him and can attack.. 

18 perception in case he don't ) 

If there's room enough by the window to do so, then Devarus is hot on Val's heels, and even willing ready to defenestrate himself if it meant being able to tackle the vampire to the ground, and then hold him there, if for but a moment. Although before all of that can happen he'd curse himself for not having simply shot and barked at the skeleton on his way over to the window, "Sorry about bout the window, but don't move!" 

Bonus Action: Fall Back Maneuver to move 15ft closer to the window.

Movement: Full 30(if needed) to dive through the window.

Action: Introduce Vlad to Wrestlemania. 
1st Attack - Replaced w/ grapple attempt: 8. (16)
2nd Attack -  Replaced w/ grapple attempt: 21. (12)
(If 1st attack succeeded, 2nd attack will replaced with a shove prone attempt.)

Also if you want an acrobatics to see how well or badly Devarus lands: 7(7). 
(Otherwise use the roll just for flavor. And if Devarus would land prone, assume he use action surge to dash to get movement needed to stand up and still do the above actions)

Val gets up to the window and he does spot Vlad down there.

Deva gets to window and sees that Vlad has moved 30ft away from where he landed. To catch him, Deva will not only need jump out the window but to also run up to him (Vlad used Legendary Action: Move at the end of Val's turn to move away from the window)

Does Deva still jump and try to catch him? (Will require Action Surge)

(OOC: With both a negative to his wisdom and intelligence, he most certainly is triple downing that far, and will also draw his rapier while at it.)

Deva takes: 9 Fall Damage

Vlad Grapple Resist: 8

Vlad Shove Resist: 6

Vlad Legendary Action Bite: 15 Dmg: missed

Deva jumps out the window and manages to tackle Vlad to the ground like how he used to tackle petty thieves to the ground. Vlad quickly tries to bite Deva off him but the old half-drow manages to keep his face away from Vlad's jaws.

Runt and Elsara's turn.

"Great job Deva!!" screams Val from atop the window "Oh! watch out! Watch out!" he says when he sees the vampire trying to bite him. the druid sighs in relief when he sees that the drow manage to dodge the bite.

Can runt rush Vlad and try to tackle him and pin him to the ground? 

She could have if Vlad didn't win initiative. Now she'll have to Dash to jump out the window and try to reach him. No more actions to do anything else. The only reason Deva was able to do it was because of Fall Back + Action Surge.

Kk.

I'll do that then. Dash out the window. Runt wants to feel the sensation if crushing Vlads skull with her own hands.

Runt jumps down the window and gets closer to Vlad.

DEX save: 3    Fall damage: 1

Elsara's turn.

Bump. Elsara's Turn