First level: The Sacre Pyramid
The first level of the serie, you [Name Here] are known to be one of the best treasure hunters (but you're actually more of a thief, but don't tell anyone) and some misterious people hire you by force to retrieve some artifacts nobody could (fear of courses, traps and really really bad physical condition). You have no idea who they are, what the place is and what do they want. They offer you nothing, except anything you find in the place, but the artifact. They seem to communicate with you with signs (terminals) which have very very low space (author's note: there may have beeen more details in the levels if the signs would support a larger ammount of text). They do not address to you respectfully and even threaten you with death if you fail to retrieve the thing they wanted. While full of traps, they are no match for you and searching around you find bizare and interesting stuff.
Second level: Amazonian Temple
Unlike the previous level, the communicate less and expect you to do the same thing as it's not a bigger deal than the first location. Nothing much about the level is being told, nor bizzare things are being found. They address you in the same cold manner. Deliver or die.
Third level: Imperial Palace
You are located in some sort of a tunel under a Palace. The artifact is revelaled to be on the lowest level, further more they address you in a respectful manner stating that you are the best employer they even head. It's revealed that all the artifacts togheter make a key to a big power for humans and that it's important for you to retrieve all of them. Nothing else is being explained.
Fourth level: Black Hope Cave
It's revealed that you worked here previously as a miner and that around here the radiation level is really really big, thus making people abandoning the mine. They tell you the artifact is on the lowest level, nobody being aware of it mostly because they couldn't reach it due to dangers. They somewhat fear what's inside and let you get it all alone. While trying to access the lowest level you find from the terminals that the radiation and possible other threats caused several people to die and others to mutate horribly and going feral (that's the shyguys wandering around). It's also revealed that the idiot workers used trinitrotoluene based robotic boms to dig, which eventually turned against them. The army was here to purge the mine, but they were forced to pull out and abandon everything as they couldn't take make it. They left automatic rocket-launchers inside.
After reaching the lowest level, it's revealed that a person has escaped the Black Hope Cave with the help of the artifact which he claims to be a gift from the god. It was left here on porpose so any other sad soul who would be trapped here could find the way out. You took it with you and probably left the mutated crew and the souls of the fallen ones in the dark of the former mine.
Note: Despite the name, Black Hope Cave is not related with slavery of the black people. It was used during the 40's and the later years for massive uranium and coal mining. It was also revealed to have the purest water source, despite the radiation (which probably was pure because of the artifact's blessing).
Fifth level: Cold Reality
Your transportation vehicle was compromised so you were dropped in the middle of a frozen desert. No artifacts this time, just purely your survival. You are contacted by a someone who presents them as "Ice Hawk Tango 6" which is a part of an unknown faction. It tells you to find an exit from the snowy location and they'll pick you from here and tell you to read the terminals across the desert to where they'll send messages from the HQ. However upon reading a terminal somebody contacts you and claim they are the ones who hired you to retrieve the artifacts and that their connection was hijacked. They claim to be called Minaco Boza and guide you to keep going east until you find their outpost and wait for them to pick you from there, they decline any affiliation with IHT6. Upon ariving you are contacted again by Ice Hawk, telling you that you will son be "pi-" (picked), but they are interupted by Minaco Boza who tell you to wait inside until somebody arrives. It's unknown what will happen next.