I really liked the art. It reminded me a bit of Terraria. The controls within the world is a good idea but because they don't stand out from the world they're not that visible. (At least the E) The character's jumps felt a bit off but I really liked the animations. As you're using Godot I can give some tips regarding the "walking animation in air"-problem.
If you're using
move_and_slide()
You can do something like this
var direction = ... # Your way of getting Input
var speed = ... # Your way of setting the players speed
if direction.x < 0:
$Sprite.set_flip_h(true)
elif direction.x > 0:
$Sprite.set_flip_h(false)
if direction.x != 0:
if is_on_ground():
pass # Play walk animation
else:
pass # Play in air animation
move_and_slide(direction * delta * speed, Vector2.UP) # Vector2.UP is needed here