Right around the first trap event with the gas there’s a writing on the wall with 7 digits. These numbers indicate how often the 7 bells throughout the map have to be rung. Each bell must be rung the exact amount of times and no more for it to activate the hard mode.
It basically buffs the twins and increases spawns massively.
Once you have done the puzzle and succeeded at the bosses, you can just hit a bell somewhere, supposedly, to get hardmode.
I played with friends, who unlocked it already, and I sure didn’t hunt any bells.
Once you (or any teammate) unlock hard mode you can always initiate it from the beginning of map (instantly), and it always affects the boss fight only
Green - regular boss fight
Yellow - hard mode boss fight
Thanks. But after unlocked the hardmode “playing” with the bells, to perma-unlock it, have I to finish the game… right? So the easy way should be play T1
True ,
if you won’t win the game after doing the bells puzzle, you won’t have it unlocked for future runs (so yes, T1 is the easy way to unlock it “properly”)
But in my case, I just joined those who already have it unlocked, won the hard mode match with them, and got it permanently unlocked as well.