Hello! I'm glad You got a pretty high score! I think what You said about people not reading the details page is most likely true because the starting pistol is pretty bad at killing enemies since it's got a low rate of fire and damage. People probably didn't know that they could switch weapons with Q and E which is why the game will be harder then what it should be. I think in the future I need to put the controls in the game, maybe something like how The Binding of Isaac does where the starting area has the controls listed out so that the players can see.
Apart from that, I think the players movement being slower is because I didn't normalize the inputs movement vector which I should've done because otherwise you move faster diagonally like You said. Thank you very much for the tips and we're glad You enjoyed the game! 😁