A GPS would've been nice...
Moving from right to left you go to a next screen, if I remember correctly you should let go at the center of the third screen. Probably the one where you can see the moon. Notice your glider not lowering at all even if you keep going to the right, which finally kills you as if you were flying into a huge wall. We didn't really care about realism those days!
You fall down one screen below on top of a tower which is part of a huge complex. Use the ladder to get inside. Here you'll have to find pieces of a puzzle or a disc and do hurry because you have limited time. Careful, there are guards and panthers around. Search the boxes for the missing pieces but also for weapons.
Several times, after using up my three life's, I had to start over again and look again for the pieces. Luckily they're always at the same spot, only the complex is that huge you'd easily forget where you needed to go next. So I needed a map, nah, there wasn't one in-game. On-line you say? Ha! That didn't exist at that time. I drew my own map, starting with a single piece of paper, equally divided into blocks, each representing one screen.
I ended up taping about 30 pages to each other, there was also a cave system underneath the complex!! To be able to know on which screen I was, I made a highly detailed map, so each box, desk, ladder and enemy was put in. Now 19 years later I still have this map.
I haven't found this game at http://c64s.com but you'll probably be able to download it somewhere to use it with an emulator.
No! I won't sent you a copy of my map! Draw one yourself!