My manga/light novel hybrid for the CB FANS

Chapter1: Portal Incident

Alpha was called at 5pm to present himself on the headquarters.He thought:"I'm hoping to not have a mission near my birthday."
He putted his clothes,got his pistol and headed to the HQ,that was not too far of his house.
Once he was in there,the commander himself gave him the briefing of the mission:
"First of all,good morning,sarge.
Good morning,sir!
I called you here because we found an old portal device during the underground expansion.It's from our belief that it takes to another dimension,that we never saw before.I want my best man to see where it takes to,understood?
Uh...but,sir,and about my birthday?It's on 4 days.
Do not mind about that.When you come back,we're going to throw a party for you![the commander whispers on Alpha's ears]
...and you are going to promoted."
When the commander said this to Alpha,he became happy.Not because of the promotion,but because finnaly,someone would make a party to him.
"Ok,son.I'm going to provide the equipment you're going to use.Just wait at the locker room.
Thanks sir"
He left the commander alone,and headed to his locker,when all of the sudden,the alarm starts ringing:"warning!intruders on the under ground facylities.all squadrons,mobilize to defense!"
Before Alpha caught his warscreamer rifle,he said:"Shit!There's where my armor is!"
And he started sprinting trough the halls,never stopping to see what was happening.When he saw his armor,he launched a flare to twist the black machines attention to it's glow.And when he machines saw it,they sprinted to see what could be that shiny glow,Alpha pressed the trigger,bullets blazed on his front,and one by one the machines fell.
"Now it's personnal!",he said while putting his armor and jumping on the portal.

Chapter 2:Incursion at the unkown

When Alpha arrived at the dimension the portal sent him,it was all pitch black.He could only see some hexagons on the sky of that unkown dimension.He said to himself:"What the hell?Hexagons at the sky?OK,now i'm here and i'm not going away now.I must vindicate the commander's death."
He turned on his flash lights and saw what he was carrying on his backpack:some cartridges,a couple of grenades,some extra plating for his armor and a small computer.He took this last item and turned it on.
The computer said:"welcome,Alpha.you have no new files and messages."
Once he was ready,he started walking,and the sun started to rise.While walking calmly,he stepped on a mine,that exploded and threw him against a rock formation.
Alpha was heavily wounded:his mask dripping blood,his torso shattered by the many shrapnels of the mine and his left fore arm had an bone piercing through his armor.First he cursed himself for letting the guard down.Second,he yelled:"Someone please help me!"
He knew that even not knowing if the inhabitants of that strange dimension were friendly or not,some would have compassion of him.
Before he started to lose his senses,he saw a peculiar figure,with strange legs and uncommon head.He barely knew who was that thing,but it did replyed to his call.He thought:"At least,i hope that it will help me to get out of this."
Once he woke up,he saw that he was on a white tent,with a red cross on it's sides.
He decide to see if that thing he saw was there,so he got on his feet and,dizzy,started to walk,with this thought of thanking whoever helped him,only to see a girl with a strange pink hair talking to a centaur-like woman."

Still in progress...

But basically this the chapter where Alpha almost dies AGAIN.Why?

Let's say that someone stabed him in the chest.