No Turn Based combat
    No Fog of War
    No more custom mercs with I.M.P
    Climbing on buildings only on predefined spots
    Explosives only on predefined spots
    No more weekly or daily salary for your mercs
    No learn-by-doing, training or practicing
    Unrealistic portraits (You can only recognize mercs by name)
    No mortars
    No bloodcats
    Les weapons as in the original
    No more decomposition and no more ravens
    Only one difficultly level
    No stealth
    No long term health care needed to heal Mercs.
    No ammo management needed
    Very bad voice acting
    No destructable lamp posts