My first recommendation would be to add an option to disable the leaderboard. Not everyone wants things they download to be always connected to the internet and sending data. With this being download only, it adds that extra level of needing to trust the developer, or run in a sandbox. I am familiar with SilentWolf and have used their leaderboard in some of our projects as well, but privacy and security are concerns that should be considered.

With this being download only, I do appreciate that you offer a Linux build. We so often have to test download games in Wine.

For me, some of the text is overlapping the medals, which makes it hard to read.

The game page recommends playing with a controller, but the controls listed are only for keyboard. I'd suggest adding the joypad controls as well. Are there joypad buttons for the clutch or handbrake? It would be nice if you also mapped the up and down analog to forward and reverse. The first time I hit a wall it took a bit to get unstuck as I really didn't think of using the L2 paddle for reverse acceleration. With R2 as acceleration I though of it like the accelerator in a car and expected it to work in both directions. If using the analog stick for turning and acceleration, then it could be more intuitive.

I don't play a lot of racing games, and was never very good at them, so can't give good feedback on game feel for the genre, but will offer what I can from my experience. I played the first 2 tracks and got the second medal on each.

While the graphics were overall fine, I think the turns could use improving. Possibly adding arrows, or something else, to give an idea of what direction the turn is going to be. There were some points where it looked like the path ahead was a dead end and it wasn't until you got close that I could see enough details to know which way I would need to turn. If you have a good memory for the tracks you can eventually learn them, but for starting out, and those without good track memory, it would be nice to have a bit more advanced warning of which way to go.

When I hit a wall and had to back up, it felt like the camera stayed pointing behind for too long. This was especially notable when in an area that wasn't straight or a smooth curve. I needed to turn to get clear, but could not see where I was going. I can appreciate being able to see behind when going in reverse, but I think it would be good to favor forward and switch to forward faster when in a forward gear.

Playing with controller I did not notice having the handbrake, so only used the R2 paddle as a brake (after I realized it worked this way). It felt like using this offered a lot more control than I expected. If I felt like I was losing control and the physics were too heavy I used this and it smoothed things out, far more than I'd expect from normal breaking. If designing this to be beginner friendly and introduce someone to the genre, then that is probably a good thing, but it did stand out to me.  Before I started to use it, I'd felt like I was starting to drift around corners when too fast. Using it felt like there was no drift or slide physics. Again, I don't play a lot of these, so maybe that is the right feel for it, but it did feel "off" for me. Having said that, once I learned to use it, it was helpful.

I hit the wall plenty. If the corner of the car was touching the wall and I was stopped, it felt like any forward acceleration just turned me into the wall more, even if the wheels were pointing completely away. I almost always had to reverse to get out of the situation. It would be nice if you could use forward turning movement to get out of these situations. Otherwise, it would be nice if the delay for switching gears was lower. It felt very slow to downshift to reverse when I wanted to get back into the race. When I hit a wall it felt like the lap was ruined between the slow downshift, followed by the delay to get the camera facing front again. I know much of this is my skill, but if this is for an introduction, it would be nice if the recovery from a mistake was more forgiving. I'm not familiar with the types of cars being raced here, so I don't know if they are paddle shifters, which would require going through the gears, nor do I know how much delays such cars would have in shifting gears, but faster gear shifting would feel better when messing up, and if the cars aren't the type to use paddle shifters, then getting to reverse should be something you can do quickly.

The engine SFX were great and very useful for knowing when to shift gears. I like that the 2 tracks I tried had different cars that felt different. I don't know cars well enough to comment on how well they reflect the cars they were modeled on. The cars felt pretty good. The models looked good and fit with the rest of the look of the game. Overall, this is a pretty good start and looks to be going in the right direction.