Nasaar sends another crossbow bolt at the hill giant, and his force balista fires as well...

Crossbow Attack: 14 Damage: 10
Force Balista Attack: 25 Damage: 10

The giant turns around and runs towards the party, the first targe in his path being Gruntor.

Attack: 22 Damage: 17

Gruntor is next, followed by Firebolg.

The firebolg begins chanting in a language that sounds very much like the crackling and snapping of flame, the roar of fire, as the giant's metal armor begins sizzling against his flesh.

Takes 5 fire damage and makes a DC 15 Con Save. If he fails, he has disadvantage on attack rolls and ability checks until the start of the firebolg's next turn.

Gruntor reals from the blow, feeling a rib crack.  He breathes deep and takes a breath to regain his composure.  And prepares to evaid further attacks, relying on his oponents  to damage the creature.

Action Dodge

Bonus Action Second wind for 5 hit points back

19 The giant tolerates the pain. He siffs the air and and hums in giant "Roast piggy... yum..."

Crossbows from tower:

Attack: 13 Damage: 7

Attack: 8 Damage: 5

Bolts bounce off the armor and thick hide.

Next round, back to Nasaar

Nasaar sends another crossbow bolt at the hill giant, and his force balista fires as well...

Crossbow Attack: 12 Damage: 8
Force Balista Attack: 23 Damage: 7

The force ballista hits.

Giants tries to rip off the the part of the armor with burning plate. STR check. 16

succeds. The red hot plate in on the ground. AC reduced by 1.

Gruntor is next, followed by Firebolg.

(No idea why forum is flagging the post)

The firebolg is a bit irritated at how easily the giant dealt with the burning armor, though he supposes he out to have see that it was shoddily constructed and easily removed. 

((How far is the giant from him currently? It's flagged me this past week even if I don't touch the roll or post anything above it, I think it's just being particularly finicky, so I've been posting separate if I need to add to the first post I made.))

Gruntor prepares to make his attacks...

attack  Attack: 26 Damage: 15

bonus action  Attack: 25 Damage: 7

Action Surge  DODGE

For the first hit, he will attempt to make a disarming a attack, knocking anything in it's hands out if it doesn't make a dc14 strength save.

The giant will take an additional 9 damage from the critical hit as well.

Giant is around 60 feet from the Firebolg, who is at the forest edge.

The firebolg calls forth his fiery friend, the female form of the wildfire spirit bursting into existence between him and the giant. He calls to her in the language of crackling flames and points at the giant. She swoops upward and hurls fire down at the giant.

Disarm check 6

The ogre is seriously hurt by Gruntor's onslaught. The attacks land on the arm, throwing the brute's great club out of his hand.

The flame spirit's fire does not give him any respite.

Attack: 13 Damage: 9

Attack: 16 Damage: 8

The bolts from the tower add to the pain with well placed shots.

Back to Nasaar

Nasaar is up.

Nassar continues to shoot, moving back from the giant if it moved towards them.

Heavy Crossbow Attack: 14 Damage: 13
Force Balista Attack: 9 Damage: 9

The pair of bolts flies into the giant's throat. The brute collapses, the ground shaking from his fall. 

Nasaar grins as his attacks take down the giant. He moves forward to start searching the giant for anything of interest or value.

"Good job, Hobgoblin Nasaar. We will go talk to the guardpost, need to tell ogres that giant is dead."

The firebolg summons his lion and his little flame spirit to him, and strides towards the tower, igniting a flame in his left hand as she flits about overhead.

"That was the only giant? We've been sent to fix your ogre problem. With the giant gone, they will join forces against humans, if we can talk to their leader.", he calls up.

The giant only has a large pouch on him, his crude armor and huge club being of little value. His giant pouch contains a wat quntity of various edible, semi-edible and completely inedible material, including the still alive hobgoblin that was snatch from the tower earlier. For the rest of the pile, roll investigation.

Firebolg, as you approach the tower, the guards appear thankful but wary.

"We thank you for the assistance. Are you scouts for the reinforcements from the citadel? Did the messengers manage to break through?"

Nasaar investigation: 7

You find a few valuable gemstones

• A small bage with 5 agate stones (10 gp each)
• 1 onyx (50 gp)
• 1 fine amber (100 go)

You also find some magic items:

• Dust of deliciousness
• Bag of bounty
• Periapt of Wound Closure