There have been plenty of comebacks from favorites scoring early goals at this World Cup, but it's difficult to envision Cameroon being one of them, especially against a team like Croatia. Here's Ivica Olić's opening goal to make it 1-0.
Cameroon's whole game basically depends on keeping the game 0-0 for a while and hoping their opponents start to get stupid. They don't have creative midfielders and their wingers are more straight-ahead counter-attackers than tricksters. And Croatia have some of the best midfielders in the world at keeping possession.
It would be pretty surprising if this result turned around.