How does the save-game or checkpoint system work in this game? it looks to me like there is no way to save progress?
Confused, frustrated with waht looks like a cool game... the first three floors, that is...

You might be having the problem that I first had. I saved the game by going to the Pause/Resume screen (Press Select or Start,I forget which) after completing the first level. What I didn't realize is that once I finished a level, the various areas, like the Science Center, The Opera House, MI6, etc. appear in a scroll down menu, in the opening screen, just above the part where you press Enter to start the game. I didn't notice it at first, and the default is the first level, MI6, so I was stuck there. When you're in the start up screen, you have to press the down arrow to get out of MI6 and scroll down to your current level. Otherwise, you start all over again at the beginning of MI6. When you shut down the game and reload another day, you can resume the game at the area of the game where you left off by scrolling down, but you always start at the beginning of the section of that area that you were last working on. In other words, you don't restart the whole area - just that section.

A second posting cuz I realized I could email you and let you know that I wrote a reply to your posting at Neoseeker re saving Quantum of Solace DS. Hope it helps.