Paradise Killer - Accelerated Justice

 The achievements for Paradise Killer now include a speed run, Accelerated Justice. The goal is to finish the game within ten minutes.

If you've played the game, most of this is obvious. 

• Click through every conversation as fast as you can. 
• After the opening cut scenes, run to the door.
• Click through Shinji,.
• Run to Starlight.
• Use the nightmare computer on the gate, jump off the platform.
• Run to Lydia.
• Click through the judge.
• Go to the entrance of the court house
• Open the door, then immediately return to the judge. 
• Grab your gun, return to judge. 
• Click through the first trial. Don't save afterwards (I tried and I don't think you can get the speed run from a save, plus the save itself uses up some time, but do tell me if I'm wrong). This is the only time you need to change the default choice in a conversation.
• Click through the second trial, the execution, and the bar cutscene.
• Make a beeline for Lydia (70 seconds). 
• Then all you have to do is click fast (about 30 seconds of talking).

This was my route to Lydia.

Jump over the railing at the first corner.

Aim for the grass.

Aim for Lady Love Dies tower, then aim for the gap between the two buildings when you can see it.

Run between the buildings and hop the fence at the end.

Keep running forwards and hop another fence. Angle towards the ladder as you fall.

What ladder? This ladder. Climb up, go through the door to the left.

Weave through the tunnels, past Crimson and out.

Over another fence.

Aim for the left side of the big rock so you can weave your way around the corner.

Strafe up this ramp and carry on forwards, towards Lydia.

Turn for this one so you're facing Lydia at the top.

Here she is!

...and the achievement should pop here.

Paradise Killer - The Last Whiskey and the Last Three Starlight Skins

 I was able to find most of the achievements in Paradise Killer by using the Meditation skill and hunting down all the hearts. That doesn't work for the last whiskey, Evening Melancholy, and the last three starlight skins; Ancient Battlefield, Dimensional Breakdown, and Symbols of Day Break. To get those, you need to speak to the ghost of a fish on top of one of the danchi (blocks of flats). 

From the pier where Lydia hangs out, it's the building right in front of you. Climb to the roof and talk to the fish ghost.

The fish will ask you a few questions that Lady Love Dies will answer automatically, if you've found the thing he asks about. If you're at the end of the game and you've hunted down all the hearts, you should have those answers. They're associated with relics, from what I recall.

Once you've got all 55 Starlight Skins, you'll get the Generation Remix achievement. Once you've found all 12 whiskeys, you'll get the Conversations about the Future achievement.

When I spoke to the fish, I'd unlocked every achievement apart from the two listed above and the speed run, and I had no trouble answering any of the fishes questions.