new hints and dialogue lines
two new achievements (someone already knew about this ;P)
additional sound effects
full joypad support
12 new easter eggs
less than half the space now occupied on disk (~3GB vs 6.4GB)
RAM usage during execution has been drastically decreased! (it was the real bottleneck for the game)
new post-processing effects in a specific location
lower loading times at startup
improved locations' loading system
dubbing sound quality improved with additional cleaning work on the tracks, removal of some background noise and complete adjustment of silences to give the right rhythm during the dialogues
language-independent saves, that will allow the player to switch language from main menu and continue a saved run to the new language (previously, once a run had started in a specific language, it was not possible to change it)
chance to go back to the main menu
jitter effect on texts
logical bugs reported by the community & misc video issues fixed
general improvements