Biorobots

Ach Hans, was habbe ich getann?

You're a biorobot, tasked with cleaning the contaminated reactor roof from radioactive debris. 

You have 50 seconds to enter the roof, do your job and return, before your robot is irreversibly contaminated. Stay any longer than 90 seconds, and it's gone. 

Be as efficient as you can.

Use WASD to move, press 'E'  repeatedly when standing near a pile to clean it.