Right you Sol Survivors.. I'm struggling now!
On the Tour Page there are three.. I've completed the first one and am onto Harmony's End, the middle tab.
Inside that, I've completed all the challenged on Intense EXCEPT Hill Top. I've managed a Siver medal .. but I cannot survive on Intense to get a Gold.
The mixture of mammoth flying beasts and ground based ones is defeating me. My main character of choice, Gus, with his Anti Air Flak and his Pillboxes ... just aint cutting it.
I've tried having numerous level on turrets.. and also upgrading a small few.. but the monsters get past even intense amounts of firepower.. so I have to spread it out to keep the pressure on.
And advice from people whove done this one?