You absolutely need to improve the controls as it is a regular complaint I see on F95. The default controls make no sense (J to attack?) and there's no reason why the game could not be played one-handed, as 95% of the time we're just moving, jumping, climbing ropes and attacking with pickaxe. All those actions should be mapped near the arrows so that the game can be played one-handed.
This is how I suggest to do it, and I tested it with AHK, now the game feels really great.
- up,left,down,right : arrow keys
- attack : shift
- jump : up arrow
- crouch : down arrow
- prone : right ctrl
Since both "up" and "jump" are mapped to the same arrow, you need to add a small delay between jump and holding rope actions, otherwise it is very difficult to jump from a rope
Having simple controls is super important as many people won't try to change them and think the game is super difficult.