Serious sam problem.

[cynosure]

I have just installed serious sam the first encounter on my PC.
The problem is that after I finish one of the levels, I am sent back to the same level instead of the next one.
This problem is happening only with this level (The Dunes).

I searched google but there aint any answer.
Help me in any manner.

Or tell me how to unlock all the levels so that I can select the next level from the main menu.

 

[izzikio_rage]

try cheatbook database for the cheats ...or just google it ...lots of sites out there have them...then you can use a cheat to get to a next level ...or you can get a hold of the save files from your friends that are in the next level and use those...