i tried making a puzzle game awhile ago, this seems more like stealth than puzzle so far, but who the heck cares. When i made my puzzle game, here are the main puzzles i thought of, just incase you need ideas...
1) Stacking boxes to reach higher places
2) building a bridge with boards (VERY HARD)
3) a switch puzzle
4) jumping from one place to another over molten lava
5) make a code or message spelled out with boards in the begginging of the level, and make it so they need that code to win, like witch door to go through, or witch switch to flip
6) hit a sertain switch that will drop an explosive on a badguy, or drop another bad guy
7) A room filled with a grid and a letter in each box of the grid, have it so ever box you step in will kill you except for some withc will spell out a message (connects with number 5)
8) Witch badguy to shoot, shoot the wrong onem and you lose (havnt tried tht, might work though)
there, i hope those help you in your puzzle game, i have no idea why i posted them because they were kinda hard to make, and i was goin to use em, but who the shiz wiz cares, make a good puzzle, i wanna play it, i
love puzzle games!
dont assume cause ull make an ass out of you and me!