Hunted: the demons forge question?

alrighty so been playing the game did some online an dude told me that after i beat the game i'd unlocked adventure+ mode an extras which r "cheats' for campaign... well i beat every single mission an the last boss passed credits tho did not watch em an basically i got no extras unlocked an i have no clue if i unlocked this adventure+ didnt see it so i went back to 1.1 in story an yea i have all my gear an everything which i was told my gear was suppose to be stripped an restart over wit my same talents / gold but have cheats like inifinite arrows an regenin mana an stam an ****, i beat all missions by myself but a few in chapter 3 i beat those in someone elses online campaign an skipped 1.9 cause of someone elses game but i still progressed so i didnt go back to it in my own campaign.. do i have to beat 1.9 since i havnt done that one yet an also beat the parts of chapter 3 i did online in someone elses campagin or wat do i do for this adventure+ mode?