I have some good ideas
You could have wolves attack you in a disaster area like the mutations in the first Hunger Games movie.
If it is possible maybe you can make the cornucopia spin at refill ( like in catching fire ) or at certain time intervals or have a disaster where the land around you seems like it is spinning, making the player confused.
Maybe you could have fireballs come flying at the players like in the first movie.
You could have a thing where like deadly things pop up out of the ground or something happens and when you get hit you are poisoned and you have to find water to heal yourself ( kind of like how water heals the blisters in catching fire )
At one of the disasters you could have the whole ground burst into flames and the only way to survive is climbing up into a tree.
There could be a disaster where the grass grows high up or sugarcane grows high and the players dont know which way to go maybe
Also, if you are running in a disaster zone, the ground can create a sinkhole that you will be trapped in
Thanks for giving me a chance to give some ideas. The map is really cool so far. Good luck to everyone