Chapter 3.1: The Second Expedition
Rolls
to hit, damage - (1d20+7, 1d8+3piercing)
1d20+7 : (6) + 7 = 13
1d8+3piercing : (4) + 3 = 7

Alert Morton gazes up to even one in trees (6). With a casting arcane he attacks it, but his aim is off.
Evocation cantrip
Casting Time: 1 action
Range: 120 feet
Components: V, S
Duration: Instantaneous
A beam of crackling energy streaks toward a creature within range. Make a ranged spell attack against the target. On a hit, the target takes 1d10 force damage.
At Higher Levels. The spell creates more than one beam when you reach higher levels: two beams at 5th level, three beams at 11th level, and four beams at 17th level. You can direct the beams at the same target or at different ones. Make a separate attack roll for each beam.
Rolls
Eldritch Blast, Damage - (1d20+6, 1d10)
1d20+6 : (4) + 6 = 10
1d10 : (5) = 5
Rolls
Ray of Frost attack - ((1d20+5))
(19) + 5 = 24
Ray of Frost damage - (1d8)
(2) = 2
"There!" Ember calls out, pointing to the humanoid in one tree (Three) and the arachnid in another (Six). She leaps to her feet and runs to the edge of the firelight below the tree with the giant spider in it, whipping out her rapier to prepare for the spider's approach.
Chase whirls away from Aanbo, yanking out an arrow and nocking it as he spies the shape of Three in the tree branches above them. He draws, aims, and looses; the arrow is lost in the darkness.
The giant spider aims its spinnerets and launches a stream of silk at Ember.
Ember is Restrained by the silk.
Barely seen from this angle, a figure sits upright on the spider's back: another small humanoid! Brandishing a javelin like a spear, this one (which we will call "Five") shouts into the night: "Bree-yark!" Chase doesn't know what it means, but he instantly recognizes the tongue of the hated foes from his days as a Boundary Warden: goblins! Of the assembled Dungeon Busters, only Aanbo can speak the language, and understands the battle cry as "Get them, everyone!" The spider-riding goblin flings its javelin at Theran.
The javelin whistles over Theran's head and lands in the fire, sending sparks flying.

23 - Ember (9/9) Restrained
23 - Chase (14/14)
23 - Giant Spider (Six) 15' up in a tree
20 - Morton (9/9)
20 - Spider-riding goblin (Five) 15' up in a tree
16 - Myrtha (18/18)
15 - Jonel (7/7)
13 - Theran (18/18)
11 - Three 15' up in a tree
10 - Aanbo (27/27)
9 - Arya (10/10)
Rolls
Giant spider silk attack on Ember AC14 - (1d20+5)
(11) + 5 = 16
Five's javelin attack on Theran AC13, piercing damage - (1d20+2, 1d6)
1d20+2 : (7) + 2 = 9
1d6 : (1) = 1
Bonus Action: Shillelagh
Hurling a hand axe at five
If she can ready her spear, or draw her sword as a bonus action, that’d be great.
Myrtha is ready to use her reaction to protect against any attackers targeting Ember
Rolls
Handaxe to hit and damage - (1d20+5, 1d6+3)
1d20+5 : (9) + 5 = 14
1d6+3 : (3) + 3 = 6
Myrtha grabs up her weapons and rushes to the bound Ember's side. She flings a hatchet into the tree at the spider-riding goblin, but it smashes through the leaves and falls somewhere beyond the tree in the darkness. Myrtha then switches the magic spear to her dominant hand.
Three takes 2 cold damage and its speed is reduced as frost forms on its body.
Theran scans the goblins and the spider hiding in the trees, as he lets his will flow outward, the power of his intent serving as a catalyst for the invisible field of spores surrounding the wood elf. Even as he does so he draws the power of nature up through the tip of his staff, hardening it as little blossoms sprout along its length.
Arrows fly from the four goblins crouched in the trees around the clearing. Three of them had been more successful in their Hiding that they remained undetected until now.
Aanbo takes 7 piercing damage.
Arya takes 5 piercing damage.
Jonel takes 4 piercing damage (with a 14, it would still hit even if Jonel casts Shield).
Arya rushes to Aanbo's side. "Camping is cursed in that forest!"

Note: enemies one through six are 15' up in the trees.
23 - Ember (9/9) Restrained
23 - Chase (14/14)
23 - Giant Spider (Six) 15' up in a tree
20 - Morton (9/9)
20 - Spider-riding goblin (Five) 15' up in a tree
16 - Myrtha (18/18)
15 - Jonel (3/7)
13 - Theran (18/18)
11 - Goblins One, Two, Three (-2, speed reduced), Four all are 15' up in a tree
10 - Aanbo (20/27)
9 - Arya (5/10)
Rolls
What happens to the handaxe? - (1d10)
(4) = 4
Goblin 1 bow attack on Aanbo AC15 (ADV from stealth), piercing damage - (2d20h1+4, 1d6+2)
2d20h1+4 : (1812) + 4 = 22
1d6+2 : (5) + 2 = 7
Goblin 2 bow attack on Arya AC18 (ADV from stealth), piercing damage - (2d20h1+4, 1d6+2)
2d20h1+4 : (1915) + 4 = 23
1d6+2 : (3) + 2 = 5
Goblin 3 bow attack on Chase AC16, piercing damage - (1d20+4, 1d6+2)
1d20+4 : (6) + 4 = 10
1d6+2 : (4) + 2 = 6
Goblin 4 bow attack on Jonel AC9 (ADV from stealth), piercing damage - (2d20h1+4, 1d6+2)
2d20h1+4 : (410) + 4 = 14
1d6+2 : (2) + 2 = 4
Fresh from his rigorous training, Aanbo's reflexes aren't quite as instinctive as they ought to be, but he manages to sense the incoming projectile as if it were a flowerpot thrown by Tuan Vo. He spins, using the flat of his palm to try and slap the arrow along its shaft. "They're all around us!" he says, in case the others have not yet noticed.
Assessing the arrow's trajectory, Aanbo sights his target and charges towards the goblin. He knows that there might be other threats, but he has to at least tie up and engage this particular one in order to prevent more ranged attacks. The monk draws his new shortsword, eager to test it out against his opponent.
Movement: 30 feet to One
Action: Shortsword attack vs One
Bonus Action: Martial Arts unarmed strike vs One
Rolls
Reaction: Deflect Missiles - (1d10+5)
(9) + 5 = 14
Action: Shortsword to hit, piercing damage - (1d20+4, 1d6+2)
1d20+4 : (13) + 4 = 17
1d6+2 : (4) + 2 = 6
Bonus Action: Unarmed Strike to hit, bludgeoning damage - (1d20+4, 1d4+2)
1d20+4 : (10) + 4 = 14
1d4+2 : (4) + 2 = 6
Rolls
Cure wound - (1d8+3)
(1) + 3 = 4
Aanbo's Deflect missiles roll means that he caught the arrow and can throw it back as a part of his reaction.
Aanbo's Step of the Wind means that he could spend 1 Ki and run and jump to get into the tree next to One as his bonus action. If you choose to do this, you could keep your shortsword attack as your action. Otherwise, he'd have to perform ranged attacks to hit any of the enemies.
Having snatched the arrow out of the air, Aanbo drops it on the ground and blurs forward, running full tilt at the tree where the goblin archer revealed itself. With a tremendous leap he bounds into the tree. A moment later, the goblin falls from the tree, dead.
Goblin One takes six damage and falls, dead.
Mother Arya prays for healing and ducks down under her shield by the packs.
Arya gains 4 HP.

Note that the enemies and Aanbo are all 15' up in trees.
This ends round one.
23 - Ember (9/9) Restrained
23 - Chase (14/14)
23 - Giant Spider (Six) 15' up in a tree
20 - Morton (9/9)
20 - Spider-riding goblin (Five) 15' up in a tree
16 - Myrtha (18/18)
15 - Jonel (3/7)
13 - Theran (18/18)
11 - Goblins One, Two, Three (-2, speed reduced), Four 15' up in a tree
10 - Aanbo (27/27)
9 - Arya (9/10)

Evocation cantrip
Casting Time: 1 action
Range: 120 feet
Components: V, S
Duration: Instantaneous
A beam of crackling energy streaks toward a creature within range. Make a ranged spell attack against the target. On a hit, the target takes 1d10 force damage.
At Higher Levels. The spell creates more than one beam when you reach higher levels: two beams at 5th level, three beams at 11th level, and four beams at 17th level. You can direct the beams at the same target or at different ones. Make a separate attack roll for each beam.
Rolls
Eldritch Blast, Damage - (1d20+6, 1d10)
1d20+6 : (7) + 6 = 13
1d10 : (8) = 8
Rolls
to hit, damage - (1d20+7, 1d8+3piercing)
1d20+7 : (8) + 7 = 15
1d8+3piercing : (6) + 3 = 9