Hi, thanks for purchasing and supporting the game and thanks for the detailed bug report. Many of these bugs are currently in the process of being fixed and the next build, coming sometime within the next week brings a bunch of optimisation fixes, bug fixes and I will add an option to turn the rain off sometime today.
In relation to the movement controls, I understand where you're coming from, however, I have re-worked them several times now and the current controller is the only one that feels right due to the perspective and the rotating camera. I will continue to look into other options though.
Also, In relation to shooting the Zombies 5 times to kill them with a pistol. Again, due to the nature of the game being top down, unlike a first/third person game, there is no way for the player to hit specific body parts, meaning every shot is essential a headshot. Because of this, I decided to opt for each gun dealing a set amount of damage. The pistol takes 5 shots to kill, but more powerful guns such as the Sniper can kill in a single shot. I may work on a system that allows for some shots to have a chance of being critical, and then add a perk to increase the change of getting a crit at some point though.
In relation to the zombie 'ghosts' killing you, I've never head of this bug, and have a feeling you're dying from blood loss. When Zombies hit you, you start to bleed, which will kill you If you don't use a bandage or a med kit. I'll look into the issue to make sure that this is the case and will also work on making it 1. more obvious when you are loosing blood and 2. Less harsh, as I do feel that the player currently bleeds out too fast.
Also, like you said, some of the building interiors still need work. These will slowly improve as the game gets closer to its completed state. And, in relation to the bug where you clip through walls, I'm still looking for a fix to this. It won't be fixed in the next build, but I am actively working on a solution.
Again, thanks for your support and feedback. Hope you stick around and see the game become the game become the best it can be!
- DrunkardWolf