Impossible Mission (Atari 7800)

Impossible. It's been a long time since the Agency stamped a mission that way. (Back then, agents had numbers like 006 and 007.) But the Agency had never faced a foe like the fiendishly clever Elvin. Until now.
Your mission, Agent 4125 (we've lost an agent or two since 007), is to fall Elvin's horrible plots. From his underground laboratory, the nefarious scientist is holding the world's population hostage under the threat of nuclear annihilation. You must penetrate the rooms and tunnels of his stronghold, avoid his human-seeking robots, and search for the pieces of his security code.
Somersault over the robots or use a precious snooze code to deactivate them long enough to search each room. As you find code pieces, the Agency's computer will help you unscramble the passwords, or you can try to solve them yourself. You've got to reach Elvin's control center, but you'd better watch you step... They didn't stamp this impossible for nothing!