Hello and thanks for responding. I'd say that the most obvious ai asset would be the zombie in the logo as well as the "headshot" text. As much as I understand how hard adding human art can be, I strongly advise not to add ai art as not only is it controversial, but it almost never looks good nor polished. It's just very unflattering.
I personally think this game would be much better with a logo similar to that of Gears Of War or Day Z.
For the movement, I noticed the sideways speed and acceleration/deceleration is different to that of the forward and backwards speed and acceleration/deceleration. Forward, backward, and sideways movement should be the same. Some games do make the forward speed a little faster though. I learned that making the accel/decel around 2 times the speed of the player makes for very snappy movement. (Ex. Sideways, forward, backward speed: 600 / accel/decel: 1200).
Some combat improvements would be a melee button, like that in the Doom reboots or the Halo series. Making the viewmodel more centered and larger would be nice and the idle crosshair is kinda distracting.
I also found a very annoying bug that makes it so that I can't escape pointer lock. A simple if esc key pressed, exit pointer lock event should fix this. I also think the FOV should be higher, I find 90 the best. One last side note is adding some hills to the terrain to make it feel more natural.
Overall a game with a lot of potential that shows what Gdevelop is turning out to be. Thanks for giving back to the Gdevelop community with your extension, it's amazing. Sorry for making this way too long 😭