The Controls: who thought its a good idea to make Jump on Z? on US Layout its on Y which makes it complete inaccessible and bad to control also the Fire Key on X
Did you every tried to press D and X, Y(Z) at the same time properly?
Please stick with regular Controls, it has a reason why we have those Standard Keys such as Space for Jump or Left-Shift for (LMB) for Shooting you cannot controll D and X at the same time with ur Index Finger.
Besides that the Game makes a very good fundamental impression and it would surely benefit from more Levels. Visuals are nice, the Controls (besides the Keybinding) feels good.
Keep up the good Work