Algodoo

It was Hot Sauce, he has a gun, he shot Green, took him to the fireplace to make it look like he was burned and not shot, and the rotten egg smell was used to frame the cook. (Wistera Jr.) A lot of the deaths involve stuff cooks would use, like eggs, huh?

you are still in TMRE

So, this is what i've got so far on the killer:

The Killer isn't someone who is dead, debuting, or a scared one yet

So That eliminates eight immediately:
Me
Magenta
PR
Green
Bell
Banana
Grape­
and Navy.

That leaves a chance for these people to be the killer:
Rainbow
Lime
Hot Sauce
Azure
Orange
and Pinky R.

My guess is Azure, I think he could've framed me and others and killed Bell and Banana with his trap-making skills

Also, i've realized that no girls have died yet, (If you count Grape's ? gender)

So #GoGirlSurvivors

ALSO, here's my guess:

I do believe Azure has striked a 5th time! Here's How:

So, with his trap-making skills from the last kill, he knows that someone must die, so he sets another trap, this time less time-consuming and quiet, but still cool.

He fills a hidden tank in the wall with lighter fluid, which smelled horrid, like rotten eggs.

He also fills about a quarter of the tank with some water, due to him knowing that water can also sometimes cause flames.

He also grabbes his gun from his room just in case.

Soon, Green walks by Azure's trap, and slips on spilled lighter fluid that was on the carpet.

Then, from around a corner, Azure ignites his trap as Green turns the fireplace on, due to it being a cold night.

Soon, the fires are enough to trigger the trap, spilling lighter fluid and water all over Green.

Then Azure comes from his spot and lights Green on fire with his lighter.

Soon, Azure comes to the roll call, and Green trembles to his death, in a burning way to go.

Not only that, Azure shot him in the head before coming to roll call, to make sure he was dead.

Murder Explanation: The killer used the trap that was set to kill Green like this: after Green turned on the fireplace, the rope broke an lighter fluid container that only had water inside it, obviously bringing the fire to the lighter fluid on the ground, buring Green, and then the killer shot Green in the head to make sure he died.