Thank you for your kind words :') I'm glad people enjoy this game and hope you will like the long-overdue update when it will be ready.
As for the 2D controls, is there something specific that you could suggest to improve them?
It's not that big issue but I was frustrated about 2d controls due to the jump and crouch inputs for keyboard are W and S, whereas in 3d they were normally SpaceBar and Ctrl, so it took a little time to get used to, i think playing with controller would be fun.. So according to me you could just add custom input-key options for player to custom pick keys they want for specific actions like jump, exactly like you created for weapons hotkeys.
b(￣▽￣)d