Halo Corpsman
(This is just a quick guide written in order to help players a bit. It is by no means fully comprehensive. Things are constantly changing, and this guide may be outdated within a month. Take everything here with a grain of salt.)

To start out, there are a few items unique to Halo PvE’s Medical system, which are listed below.
-
Biofoam Canister - The Biofoam Canister is a highly potent stabilizer, used in the triage of fallen ODSTs and Marines. The canister will inject twenty units of biofoam, and is a single use item. By no means is this a cure-all, and should only be used in emergencies when immediate treatment is either not viable, or if a friendly is near-death.
-
Biofoam Pen - The Biofoam Pen is the standard trooper equivalent of the Biofoam Canister. It is significantly less potent, and is only available in either Wall-Mounted Medkits, or IFAKs within the armory. While less potent than the Biofoam Canister, the pens can be easily accessed and used by all troops, and will be overridden by the Biofoam Canister if one is administered.
-
Optican Burn Guard - A medicated powder used in the treatment of burn wounds. It is an equivalent to Kelotane while also adding a slight painkiller effect. It should be noted that this is a different medication than Kelotane, and can be used in conjunction with it in order to better treat burns.
-
Morphine - A painkiller medication. It is stronger than tramadol, though weaker than Oxycodone. Used as a stopgap, and will likely be removed in the future.
-
Optician Bandages - The Halo PvE Equivalent of Brute Kits. They come in stacks of ten and must be opened upon the first use. (Activate in hand) Used to stop bleeding, and to treat wounds.
-
Optican Burn Spray - The Halo PvE Equivalent of Burn Kits. They come in stacks of ten and can be used the exact same.
-
Chorotazine - IA in liquid form, turned into a single chemical.
-
Biofoam Antidote - An antidote that immediately removes all biofoam reagents from someone in the event of an overdose. Corpsmen only get ONE of these, and it will deal burn damage as a tradeoff for it stopping an OD.
Now that you know the new items, we’ll get into the main difference of Halo PvE’s medical System
It is LIQUID BASED
As a result of medical being based on liquids, this brings a multitude of changes. But the main one that you **NEED TO KNOW** is that you will need to have a syringe in order to give anyone any chems, unless you’re using an autoinjector. There are also a few other changes that I’ll mention here. Kelotane has been removed, and replaced by Optican Burn Guard (Description Above). Chorotazine has replaced IA, and Syringes now no longer break on Harm Intent. Meralyne and Dermaline are available in liquid bottles in the Medical prep area as well.