sentry Level 101

After a few more hours of walking I manage to come upon a wall. At least I think it is a wall, I have never seen one so tall though. I suppose it could be a mountain, or maybe just a really large… thing?
I do not know how thick it is so I probably shouldn't try to ghost through it. In all honesty I don't know how much I can ghost through things.

Maybe I should try walk crawling, but I do not know how to do that so maybe I could try to find another way around.

There does not seem to be much of any strail around the wall, just some footprints, strangely perfect footprints. Almost like they were made from one man who could perfectly walk in a circle around this wall, but that would take way too much measurement and planning.

A noise behind me, it sounds like running.

I can see it now, but not really. I feel it more than I can see it. But I know it's there, a sentry.

The sentry is charging at me, but I've already beaten one of them so how hard should another one be?

The sentry lunges forward at me, once it's close enough, and puts forward its fist to hit me immediately. I've started to turn towards it by this point, and I'm somewhat nervous. The last time was sort of because I was afriad, so it might not work now that I'm confident.

I've turned into the material that the sentry is made out of and everything feels a little slow motion. The fist is making impact on by shoulder and I feel something strong pushing against me, but I'm made of sentry now, I should be fine.

I'm thrown back into the nearest tree from the blow. The guy seems to have knocked the sentry material out of me and now I don't have any protection from its blows. The sentry is somewhat leaning on one of its legs, slightly hunched over and the arm that hit me is steaming. No, the arms not steaming, some vents that appeared along the arm are steaming, or smoking. The sentry must have had some kind of rocket powered fist. That is so cool!

Now that the sentry is paused for a minute, probably recharging or whatever it is sentry's do, I should probably try walk climbing.

I hastily get up and feel a sharp pain in my arm as I realize that my left shoulder, the one the sentry hit, is injured.