What The Hell Do I Do With This Roommate And What Can My Landlord Do About It

Location: Ypsilanti Michigan

Title says it all. I don't post often, I've (20M) been here for two months, this guy was insanely chill at first, went to work, told me he doesn't do alcohol. Now it's an entire 360

Past three days, my roommate [M, late 30s] has stopped going to work and has been drinking non-stop. The first day it happened, he tried to start an argument, for his notion was that he couldn't read what my emotions were then yelled at me that he was the bigger man of the house because I wasn't going to take out his trash for him. He then offered me alcohol, which I refused and he told me I "had to try it or else I wasn't man enough" and I still refused.

I then asked him if he was enebriated and he goes "man thats personal but ah you know" then he made motion where he was rubbing his finger on his gums which was confusing. It looked like he was mimicking cocaine appliance. Then past three nights, I've been hearing from his room "you shut the fuck up when im talking to you. I call you whoever I want, when I want, I'm a man, you're a whore" to someone over the phone. (YIKES)

Today, three days later, I came home from work and I'm going upstairs to my room. The moment I get to the top of the stairs, he yells "man, man, shut the fuck up. SHUT THE FUCK UP [NAME], man you doin too much." and I didn't say anything at first. About twenty minutes later, I knock on his door and ask him if he's okay, and that he should probably come out if he needs help because he's literally been up for 3 days straight, day and night. He then tells me to "shut the fuck up because you don't know who you talking to, man, imma fuck you up"

I go "Hey, you don't get to talk to me like that in our place. That's not how this works. The behavior you've been displaying the past few days is insane." He then begins fumbling with his doorknob (he is not allowed to have a lock) to open it. And he goes "man let me tell you something, let me fucking tell you something."

He comes out and tries to get in my personal space. I tell him firmly with my tone slightly raised at him that he needs to back off and stay at his doorframe, if he wants to talk. There's pepper gel in my hand incase of self-defense reasons.

His eyes are yellow, he's telling me "you don't know who the fuck you talking to. I'm smarter than you, (n-word), you don't know who I am. I'm human, I make mistakes. Man Imma fuck you up (n-word)." He's so insanely drunk, I can smell it as he talks from afar. I tell him he can't do what he's doing and I give a warning that if he ever tries to get that close to me again, I'll call law enforcement. He makes a step towards me, and I start shaking because he says "Oh yeah? What can you do against me? You know who the fuck I am?"

I go back to my room. I call non-emergency, I call dispatch and holy shit they took him to the hospital.

I feel awful, like I could've de-escalated better and I've emailed my landlord and other roommate about this but I'm unsure of the outcome. All I know is that I took over for a previous roommate, so it's a sublease

About 4 hours later, he came home just now, and he's yelling "stupid ass motherfuckers. I oughta kill you motherfuckers. Man this shit always happen to me. I'll fuck your shit up" and slamming things around

What legal actions can I take?