"Yeah I'll be honest fellas, I'm pretty sneaky, and a half decent scout, but I can't see a single thing down here. Kinda hinders my abilities a bit, probably won't hurt to travel as a pack" Peter says with a sheepish grin. as he says this he starts to walk in to the dust filled room, raising the coin above him to maximize the light, as he un shoulders his bow, carrying it in his off hand

The chamber is completely silent as Peter and Razil enter with (I assume) Aldrich and Muirgurn following close behind.

As you get a few feet out into the room, Razil, your darkvision picks up an open door at the end of the short ten foot long corridor on the other side of the room. 

Dexterity: 9

Razil and Peter, you both hear a faint creaking sound coming from the niche ahead of you to the right, alerting you to danger. The noise is too faint for Muirgurn and Aldrich to notice it, however, and they're surprised when the cobwebs are flung aside not only from the niche the sound came from, but from all four of the niches around the room, by skeletal hands, revealing animated skeletons, wielding swords and bows, moving to attack.

Roll initiative!

Skeletons: 16

Initiative for Aldrich: 16
would it be fair to say that aldrich cast mage armor upon entering the room?

Muirgurn's initiative: 9

(Has guidance worn off? I suspect so, but if not Peter can add an extra 1d4 to his initiative, since it is an ability check)

Peter's Initiative: 14 ((I'm pretty sure guidance would have wore off by now but if not add 41 ))

(Should i reroll my initiative or roll a tie breaker? Or do i go before the skeletons because i have the higher dex?)

Inititative:  17 

Yes, it's entirely plausible that Aldrich would cast mage armor on himself as part of his standard preparation for entering such a place as this room, or even this dungeon, so consider it as having been cast.

Believe it or not, it has been just under a minute since you were all at the top of the stairs, so Peter's guidance is still in effect.

Let's break initiative ties by Dexterity score. It's very Holmesian!

So initiative order is:

17 Razil

16 Aldrich (surprised)

16 Skeletons

15 Peter

9 Muirgurn (surprised)

Here's a map:

The four circles are the party, which has entered from the hallway at the top of the image. Peter and Razil are in front, and Muirgurn and Aldrich are in the back rank.

The four S's are the skeletons.

Razil, because you're not surprised, you get to go before the skeletons.

Razil backs up into the corridor opening, putting some space between him and the skeletons.  Drawing a small rod from his pouch as he does so, he utters some mystical words and clenches his fist,   As he finishes, a skeletal hand appears in front of the closest skeleton and reaches out to grab it with a Chill Touch.

Attack: 8 Damage: 5 

Being no stranger to the chill of the grave, the skeleton absorbs the impact of the spectral hand and hisses as its head swivels to follow your movement and it walks towards you, Razil, dragging the hand along with it, intent on not letting you leave alive. Standing between you and Muirgurn, it attacks you with the tarnished sword it carries. Attack: 17 Damage: 8

Another skeleton approaches from ahead and to your right, swinging at Peter with its sword. Attack: 11 Damage: 6

The skeleton directly to your left rushes from its niche and attacks Aldrich. 16 Damage: 5

While ahead and to the left, a skeleton with a bow steps out several feet to take careful aim at Muirgurn between Peter and Aldrich and shoots its arrow. 17 Damage: 8

The first skeleton's swing goes wild as the ghostly hand continues to grip tight.

The other two skeletons also miss with their swords as they swing stiffly at Peter and Aldrich.

The arrow whizzes with precision between the two humans, however, and finds its target, hitting the surprised dwarf squarely.

Peter, Razil, and Aldrich, you can now take your turns before the skeletons get to act again.

Razil mutters as the skeleton comes towards him.

"You had it good...you should have stayed dead."

Gritting his teeth, he stabs at the skeleton with his dagger.

Attack: 24 Damage: 8 

Here's an updated map:

The letters correspond to first letters of the PCs' names, and the numbers are for the skeletons.

Nice crit, Razil!

"no no no no no" Peters blurts out, obviously startled. He panics having the skeleton so close. He drops his bow to the ground, kicking up a plume of dust as he deftly draws the rapier from his belt and attempts to skewer the spine of the skeleton in front of him (( 8 to hit doing 6 piercing damage ))

Peter's rapier thrust is deflected by scraps of armor worn by the skeleton that faces him, but Razil's dagger strike penetrates his skeleton's armor, cracking through bone underneath. Nevertheless, the skeleton still stands as the ghostly hand dematerializes.

Aldrich, it's your turn next.

The Tower of Zenopus: 16 (round 2)
==================================
  17: Razil Trympan <10/10 HP> (AC 13)
# 16: Aldrich Garen <10/10 HP> (AC 16, Mage Armor)
  15: Skeletons
  - Skeleton 1 <Bloodied> 
  - Skeleton 2 <Healthy> 
  - Skeleton 3 <Healthy> 
  - Skeleton 4 <Healthy> (Shortbow)
  15: Peter Killian <8/8 HP> (AC 14)
   9: Muirgurn Fettercairn <6/12 HP> (AC 18)

Aldrich swings his longsword at Skeleton 3. Attack: 20 Damage: 4

Skeleton 1 takes a stab with its sword at Razil. Attack: 10 Damage: 4

Skeleton 2 tries to stab Peter.  5 Damage: 6

Skeleton 3 stabs at Aldrich.  16 Damage: 5

And Skeleton 4 shoots another arrow at Muirgurn. 6 Damage: 8

Aldrich swings wide of the skeleton, missing it completely.

Razil is hit, as is Peter who goes down, unconscious.

Aldrich sidesteps his opponent's blow, as does Muirgurn the arrow that flies at him.

Peter, make a death saving throw.

Everyone else, what do you do?

Feeling his previous dagger strike was fairly effective, and angered at being struck, Razil will lash out with his dagger again as the skeleton in front of him.

Attack: 18 Damage: 3