Here are the key locations!!
vena cava key is in the bottom far right of the colon
vsd key is in the far right of the lungs, out to the right and slightly above the door from the right heart (couldn't land on the platform w/o picking it up, but this purple platform is the spot!)
aorta key is in the left heart, if you drop down from the lymph node (the green bean shaped thing) or down from the vsd key, go left from there, and then up.
pictures attached below
Thank you so much for playing this game, you made my day~
