this is a very good game, with a very strong message about the evil people who killed innocent people in cambodia, but i have to say, that the walk is too long for a player to stay within the game.
you should make the walk alot shorter, and your should not make the walker to blow up in the middle of the walk, since this makes you to start over again, and given the length of the walk, makes a replay quite hard for a non-patient player....
the message is very strong and great about this dark era of cambodia, but the game should be more easy-to-play, and alot shorter on the walk, and without the mines/blow-ups in the middle of teh walk.
it will get the message much further if the players keep on playing the game, and reach the end faster.
you do good stuff, tho, so i liked the game.