The goal of the game is to complete two objectives at the same time (being at work and being at home). The dialogue with the NPC's changes the story of the player character and if work and home (the buildings on the far left and the farthest on the right), you can go to the right building and complete the game.
In theory. Because one NPC is accidentally deleted instead of the car in the tunnel and you might get stuck on your way to the building on the right side.
If you want to see the end of it, then you can play the other version, which contains fixes for the gamebreaking stuff.
The jumping is too high. I've noticed that too. Im now working on issues where jumping and climbing have undesired effects when combined, and until I've fixed that, I can not make jumping right. But keep in mind not to let fixes on the other version affect you're rating here. But it might make you help understand the game a bit better.
Im sorry for the late reply the internet in my city went down.