When Dylan Hunt is first shown being discovered after the earthquake, his right leg is hanging off of the table he is strapped to. When the camera angle switches to the inside the chamber, both legs are now on the table.
Either too much has changed or not enough time has passed for given changes. the landscape outside the caverns should have ruins. 154 years isn't enough time to clear it up like that. There are no signs of nuclear damage. and the city of Terrania couldn't have been made that magnificent that quickly. Terranians have to evolve first then become able to build such a showpiece of a city.
After the initial earthquake/rockfall, when the chamber tilted, the main character's head tilted AGAINST the angle. In reality, his head should have 'flopped' in the opposite direction.