Are you trying to find all the events but just seem to be missing a few in this guide I hope to help you find all the events!!
Suburbs Event 1 and 2
In the suburbs find the door to the right with 27 A written on it and enter
Once you enter there will be a guy inside, talk to him and he will start event 1
After you finish his first event just wait a bit and he will have a 2nd event waiting for you
Shore Bay Event
At the far right side of Shore Bay A vegan will be standing Idle talk to him and he will start an event
Ice Age Event 1
Once you beat the bosses in ice age and get the riff and come back later a Yeti will show up and this will start event 1 in the Ice Age
Ice Age Event 2
For event 2 beat the yeti and two frozen vegans will show up talk to them and it will start Event 2
Casa Vania Event 1
For event 1 enter Casa Vania and just go into the throne room that was behind the organ and a shadow version of your character will be standing there
Casa Vania Event 2
Once you enter Casa Vania go to the right hallway (East wing) and in this room punch the middle turned off light until it and opens a secret pathway
After you enter there will be a demon in the far right of the room with an event for you
Shopping District Event 1
Right by the entrance of the shopping district a crack with water flowing will be there grab a bomb (Red one can be found by cycling Annex Alley) and blow it up
And once you enter the hole a guy on the right of the room will be standing there with an event
Shopping District Event 2
Bring a key to the door near the park
And once you enter a demon will be on the left side of the room complete the event once and you can move on
High School Memories Event
Once you enter high school memories go down to the second floor and a locked door will be to the right
And once you enter the room he will be on the far right
High Park Event 1
Bring Key to the park locked door and open it
And once your inside a guy will be standing right by the entrance with an event
High Park Event 2
(I suggest starting and completing this event as Roxie for an achievement)
By the burger mart at the end of High Park a Ninja will be hiding behind some boxes talk to him and he will move locations
Next he will show up hiding behind some boxes in front of the Movie Studio
Movie Studio Event
At the far right of the movie studio enter the slide up door and a demon with an event will be there
Distillery District Event
Enter the room next to the hot dog stand and a robot will be standing there with and event
Warehouse Event
In the warehouse head to the far right and a demon with a bag will have an event for ya
VPD Entrance Event
After beating VPD HQ come outside and the guy standing next to the door will have an event for ya
VPD HQ 1 and 2
Once you enter VPD HQ head to the far right and head into the jailcell and once inside two jail cells will be there unlock both for two events
Wasteland Event
I think these guys show up after beating the final boss just enter the room with the string lights and two robots will show up with an event
