For making this guide and beat the game myself, I referred to following youtube video series:

The game begins and you will spawn outside of the college.
First, pick the GLASS lying aside of the dumpster. Let's assume he washed it before using it



Then enter the door and progress with the conversation, all 3 option yields no difference but the call dean one gives 80 points and is most irony so i recommend that.

Now, speak with both the guy reading the newspaper, and the guy stand in front of a stack of leaflet. Choose all possible options. Now you should have a coin, and a leaflet. You are done with this screen and can proceed to the left
On the next screen, use the door to your upperleft to open it, then use move to go into cafeteria, you should see a conversation going on there. talk with the staff running the cafeteria and exhaust all the options. You should get a cup of coffee. Now "borrow" the salt shaker sitting on the bar. spoiler:he does not returns it


Now open the inventory and combine the coffee and the salt, then get out of the cafeteria and go upstairs. use the door to knock it and watch the cutscene. Guess salt in coffee is quite effective.

Now the staff get into some trouble, let's check it out at cafeteria.

After the cutscene, talk to the boy standing, choose all possible options.
Go out of the door, then go right, return to the screen where you got the coin.
Talk to the egghead. there should be a new option that allows you borrowing his key.
Use the key on the door of the professor's office on the 2nd floor.
Take one exam paper on the desk, open the lowest "folder" or cabinet drawer beside the entry. and take the bottle in it.
Now a cutscene, and you should be back out safely.

Return the key to egghead, then go to the cafeteria and bribe the boy standing using your exam paper. Now you can use the ACCESS on the top of the bar to get in to the kitchen.

Congratulations, you can eat free buffet now!

Enter the pantry

Open both freezer and fridge

Use glass or plastic cup in inventory for whatever reason on ice in freezer.

Take pocacola in the fridge and knife on the table.

Open the bottle of wine using the knife.

Pour cola and wine into the cup.
Now you got a cocktail, It is the time for party! Leave the college following the way you came and it is suddenly night.

Eat the pill you got in your inventory and enjoy the ending.

So that is it, although our MC is still probably going to fail the exam, at least he got a purpose for his life.

Notice following this guide will only get you 1730/1750 points in game. my guess is maybe i should give the leaflet to somebody, or deal with the bottle/cola after using them.

If you have any advice or concern, feel free to contact me.

Thanks for reading!