Jimjar moves up along the wall until he sees the orc (N10) and throws a dart, unfortunately with poor aim.  Narstin rushes past Jimjar (to L10) and strikes the orc (initiative 16, @K11) with his hammer.

(Derendil is at C5 and moving to K10 is 40 feet.  Do you want to use his action to dash into melee, ie: no attacks, or do something else?)

(Eldeth should have been part of the grouping above.  She can move as well.)

 (Whoops, I was looking at Jimjar's location instead of derendil's)

Derendil moves closer to the orcs, ready to lash out with his claws at any that are foolish enough to move into range.

(Ready his multi-attack action if an orc gets within melee range.  Can use same rolls as last post presumably.  Otherwise I can reroll if needed)

Drawing an arrow while she steps forward a few feet (to J4), Eldeth prepares to fire on the spear-wielding orc, for he seems to be the group's leader...

• Longbow attack 1: 8 | Piercing damage: 8

She rapidly draws and nocks a second arrow, firing on the same target...

• Longbow attack 2: 13 | Piercing damage: 8

Derendil moves up to the center of the room (to i8) and is ready to claw any orc that comes near.

Eldeth fires two arrows that both sink into the leader orc, who is looking very injured now.

The leader orc speaks some words (presumably in orcish) and casts a spell and a spiritual spear appears in front of Eldeth, the last to injure him.  It makes an attack...

Spiritual Spear Attack: 18 Damage: 4

The orc then throws his spear at Eldeth...

Thrown spear Attack: 10 Damage: 6

and moves around the corner (last seen by Jimjar at P11).

(Tozer and Sarith left for round 1)

Sarith: Casts Faerie Fire (DEX save DC 11 or be lit up). The leading edge of the 20' cube goes from K11 to N10, and goes south (and east) from there. Aiming to get both orcs and avoid the members of the party. (Hopefully the orc leader is somewhere in that area, but probably not.)

Beegred: fires the crossbow at the orc at K11. Even if it passes the DEX save, that area is still in dim light. (Regular attack- advantage due to being hidden before the attack, disadvantage for long range.) Attack: 20 Damage: 4

Tozer changes his grip on the javelin as he prepares to hurl it at one of the orcs. He moves forward (to i5) to give himself a better chance of success and heaves the javelin at the orc ( at N10)...

• Ranged javelin attack: 18 | Piercing damage: 6

Faerie Fire DEX save.   Orc @K11: 4.  Orc @ N10: 7

As the orcs begin to glow from Sarith's Faerie Fire, Beegred can finally see a target and he fires his hand crossbow, scoring a solid hit.

(Rolling for Tozer for advantage due to Faerie Fire: 3)

Tozer moves (to i5) and hurls his javelin, hitting his mark.

(Buppido, Beegred and Xilyrah can begin round 2.  Map and table incoming.)

Beegred moves to K7, casts Hunter’s Mark on the same orc that he shot last time, then shoots another bolt.

Attack: 26 Damage: 9

(That includes spell damage, but I forgot to roll for advantage: 12 )

Beegred casts Hunter's Mark and the orc comes into complete focus.  He fires his hand crossbow and hits the orc in the neck.  The orc drops to his knees and falls flat on its face.

Seeing Beegred fell the nearer orc, Buppido takes aim with his crossbow at the remaining (for now) orc and fires:

Light crossbow attack: 18 If successful, piercing damage: 8

As Buppido looses his bolt into the orc, Xilyrah follows immediately with another Eldritch Blast:

Eldritch Blast: 21 If successful, force damage: 8

(If the orc is reduced to 0 hit points, Xilyrah receives Dark One's Blessing = 5 temporary hit points)

The combined assault from Buppido and Xilyrah fell the second orc.

(Jimjar, Derendil, Eldeth and Narstin can all go now that the orcs are dead.)

(The party lost sight of Krognak when he went east around P11, yes?)

(That's right, he went around the corner to break LOS).

As everyone momentarily catches their breath, Xilyrah speaks up, "I don't know about the rest of you, but I'm not letting an injured, angry orc get away and risk there are others he could bring back. Who's with me?"

Eldeth, with bow still drawn, and Jimjar dash after the fleeing orc (both running around the corner at P11).

Derendil moves to where he can see down the tunnel where the orc disappeared, lookingt o see how far the orc has gone (or if he's even still in sight).  If it's close enough to reach, he moves in and attacks with his claws, otherwise he also dashes to move down the tunnel as far as he can.  Narstin follows as well.  If the others have managed to get into melee range of the orc, Narstin casts Sacred Flame at him (DC13 dex, 7 damage).  If they haev not, but the orc is within 60 feet of Narstin and within line of sight (should be in range at least, since I can get past wher ehe started his round, so even a dash shouldn't get him out of range, as long as he's within sight), Narstin instead casts Command, telling the orc to "Approach!" (DC13 wisdom).  If the orc is out of range and/or sight, Narstin simply dashes after the others.