Here is a full walkthrough for version 1.3 of No Haste.
When you start a normal solo adventure, you go through the big gate, into the hall. In the middle there are four numbers on the palettes:1856 this is the password for the door, which is on the bottom right as seen from the gate (also directly on the right from the gate).
If you go through the door, you are in a maze. To get through there, you have to go left to the wall and then left again to the end. The key to the locked door is on the shelf in the same room
If you are through the door and right up to the toilets, the search game begins. This is the same game as ESAY MODE, means you have to find objects with certain textures. The first object can be found by the toilets next to a sink. As soon as the next closed door comes, which you can easily open, the remaining 9 objects come. I tried to describe this in the attached picture. If you have now found all 10 objects you can flee through the EXIT, which is located at the back of the supermarket.