I like how this is a challenge. Finally, something that doesn't treat me like a clueless dummy. I am human and I have a brain that I can use. Thanks for letting me use it with video games again!
To sum things up in comments. We want
-Ways to unlock classes
-Multistory buildings/sewers
-More uses for equipment like the stones to turn lights on/off
-More equipment so it doesn't get as boring