I would translate everything cameleon said for the rest of thw group, the beast that was suposed to eat us and the magic book and the portals.

If we didn't find the book in the first two minutes i would cast detect magic spell and look for it. 

I would try to rush everyone, concioua of the 10 min limit of hunters mark. 

Detect Magic find no evidence of anything magical beside what magical instruments all of you and the torch give off a slight evocation glow, which you realize are cotninuous flame spells. Checking out the assorted weapons in the room, they're in various sates off disrepair, some even breaking apart when you touch them. The spear Onyx tossed aside at the door lay in splinters and it's head in pieces. 

This is all before the explosions and approaching people

OCC: Onyx managed to grab one of the usable scimitar. Weapon durability will not be a regular thing in case you're wondering.  

Mai stands in the back. "I'll make them easier to see..." Mai is going to cast faerie fire as soon as the guards get to the doorway.

Tundra grabs her things and gets her quarterstaff, she readies herself at the door in a fighting stance, with a two handed grip, ready to assist Gwazi in bashing whatever comes through the door.

Attack: 7
Damage: 4

The door is violently opened and someone rushes getting hit by a cloud of daggers first. The second see the blades ripping apart the first but couldn't stop in time, they're shoved through the door by the rest group which comes to a stop outside. Out of the door, you see two more lizardman and two larger gatorlike men at the back. 

1st Lizardman takes 13 from the cloud of daggers as it rushes through, shoved forward by the second lizardman. 

Gwazi strikes with his spear at the lizardman, striking it's scales before being deflected off. (Gwazi misses). Tundra follows up with her own quarterstaff, clubbing the lizardman in the head. 

2nd Lizardman takes 11 while standing in the cloud of daggers. 

Dex Saves for Faerie Fire

Lizardman #1 - 19 Passed
Lizardman #2 - 17 Passed
Lizardman #3 - 8 Failed
Lizardman #4 - 18 Passed
Gatorman #1- 6  Failed

Everyone roll initiative now. 

Lizardman as a group 10
Gatorman as a pair 2

Initiative 10 

when its Izen’s turn he stabs his tool into the vial and pushes the button on the item sending a drop of sickly green liquid into the vial he mixing the liquid with the water as it turned into a brown sort of vapor, he then took the needle out and aimed the bottle forward uncapping it as a ray of sickly brown mist shot forward at the second lizard man, if he had been downed it would be aimed at 3

ray of sickness Attack: 19 Damage: 10 con save 14 for half damage and on a fail the target is poisoned 

Initiative: 23

Roll for me please. +7 init

Huntersmark is still up and i get two attacks with the longbow (+4) on anyone who didn't had abgo yet. 

Gotch initiative: 6

Gotch will get behind some sort of cover,t hen fire a crossbow bolt at one of the ones who got intot he room...

 Attack: 8 Damage: 4

init: 4

for Onyx, Initiative: 21

Hunter's Mark is still on the corpse and requires you to use your bonus action to move it. Isn't Hunter's Mark an 1 hour long focus?

I'll post a very rough map of positions, expect for those who did melee attacks, everyone free to position themselves anywhere in the room

Gwazi breathes in sharply through his teeth as his spear misses the mark, then finds himself too slow to pull back for another strike as the Lizards move forward.

Mechanics:

Initiative Order

Tundra 
Onyx - Long Bow attack
Izen - Ray of Sickness
Lizardman
Gwazi
Gotch - Crossbow Attack
Mai
Gatormen

Combat Situation:
Lizardman #3 and Gatorman #1 under effects of Faerie Fire so advantage on attacks against them. If your attack is redircted to one of them, I'll roll the advantage roll for you. 
Lizardman #2 in cloud of Dagger

Happy that she didn't loose her edge yet, Tundra relaxes a little, focusing her mind on every strike, targeting whichever berk she hit last time.
She tries not to spend too long reminding herself of all the martial arts lessons she only half followed and the meditation classes she'd spend day dreaming and attempts a volley of attacks
(Use Flurry of Blows).

Lizardman #1 ducks under Tundra's quarterstaff strike  twisted to dodge Tundra's kick but left him in awdard spot unable to avoid the second kick.

Dex Save: 5

Onyx uses his bonus action to move the Hunter's mark the Lizardman #2 and rapid fires two shots from his longbow as his first target is knocked to the ground prone. (ranged attacks have disadvnatage against prone)

Attack: 16 Damage: 10  + 2 

Lizardman #2 crumbles dead in the loud of daggers under the arrow show. Onyx moves his second shot to Lizardman #3

Attack: 26 Damage: 10 

Advantage Roll 12

Lizardman#3  glowing due to Faeire Fire take a arrow to his scaley hide. 

Izen's fire a sickening green ray at Lizardman #3, striking him hard on. 

Con Save: 10 He's poisoned.

Lizardm #1 stands up and tries punch and bite at Tundra.

Punch: Attack: 19 Damage: 3

Bite: Attack: 24 Damage: 9

Lizardman #2 Deceased

Lizardman #3 rush off to the side, out of sight.

Lizardman #4 rush pulls out a dagger through the cloud of daggers, taking 11 and punch and bites at Gwazi. 

Attack: 17 Damage: 6

Bite: Attack: 16 Damage: 7

Gwazu, Gotch and Mai can act before Gatorman act. 

 Gotch can change his action if he wants in light of new events. 

Those on not on maps are free to move around. 

Gwazi grunts in pain as the dagger and teeth find purchase in his exposed skin. The growl then turns to one of anger as he simultaneously jabs both his spears at the attacker, looking to take revenge for the assault.

Mechanics:

Gotch keeps his action as stated.  He will get behind something for cover though, so he is able to pop out, shoot, then pop back behind his cover.

Tundra makes her best effort to cushion the punch as best she can by allowing for her body to mold around it like a strand of silk, but to no avail, it hurts just as much and as she briefly engages in this act of creative imagination, she has no time to anticipate and dodge the bite. A rookie mistake, at this point she should know better than to involve her thoughts during a fight. The failure in reigning herself into the moment hurts much more than the lizardmen.
She cuts off any further thought and forgets the pain as she takes a firmer grip on her quarter staff, putting her whole body into it, preparing her elbow for a second strike.

Attack 1: 15
Damage: 7
Attack 2: 7
Damage: 4

Onyx would be standing NW behind Gwazi, to get 5he best possible aim for his bow.

Izen seeing the fight go down quickly held the bottle up before smirking a bit as it's waste. A few small bubbles of green substance. He then held his finger under it causing the small flame to appear on the end of it and heat up the container causing the bubbles to pop. Once they did he popped open and filled the vial. With another push of his button a red drop of liquid came out mixing with the elixir. He then splashed it's contents forward at Gwazi and when it came into content with his wounds it puffed up stopping the bleeding. Izen then shot the fire at the gatorman

Healing word in Gwazi 7
Fire bolt on Gatorman Attack: 20 Damage: 3