Dunno if someone already did and talked about it but the first CG you can only unlock if you transfer a file from the first chapter to a folder in "Gutter Trash", so I'm uploading it for those who don't want to replay all the first chapter again or just want to start already with chapter 2, first one it the 2 defeats variant and the second the 3 defeats variant.
You put one of these files in the "(...)CS - Gutter Trash\www\js\plugins" folder (you can make a backup of the "DataCrystal.js" there if you want), overwrite it and then you can start the game.
Starting it's actually BEFORE the first chapter for some reason (if you are confused coming from the earlier game) so you need to do some boring stuff: find the hotel, talk to someone who will give you something to Scratch your mouse friend, find your house (Mezz will talk something about getting a drink), check the refrigerator, talk to Scratch, leave and find a route to the East.
FINALLY after that you can check in the status menu. If you have some anal/oral points it worked, go along the road and Mezz will stop and there will be a "!" speech bubble, enter the alley to start the event.
If you picked the 2 defeats variant you will enter a battle with some boars from chapter 1, losing it you will get the cutscene, if not...why you did it? The 3 defeats variant will give you no choice and you will go straight to the alley gangbang cutscene, the only slightly difference is a bit of Mezz dialogue before the battle/cutscene, the event itself has no variant sadly.
The game continues as normal (if you think this is a bad end) and you can now visit a basement with a locked door that doesn't do anything I think?
Edit: It say [virus] probably because it's a ".js" file, let me know if I need to do something else to upload it.