The Get_Serious.rar file you have requested: Maps Levels Missions / Miscellaneous / G to H Titles / Get Serious - 5.23mb is not available. Perhaps try browsing all files for the game Serious Sam: The Second Encounter and upload any files you want to share or are missing. This is the only information we could locate:
A square-type map with plenty of cubes to "hide"Archive contains weapon and shotty editions of map. A square-type map built for a maximum of 4 players. It contains pleny of cubes to "hide".