connect a controller to your pc and you got yourself second player controls.
The controls for a xbox controller are:
Analog stick = move
A= jump/activate
X = attack
B= special ability
Y = inventory
RB= block
LB = block breaker
to get more money go to any store click on an item that you can buy then click your inventory then the buy button should still be there then click buy. if you do the same thing twice you might get NaN money or you might not.
You have a good eye :) i always use sketchup for making building :) it helps a lot.