1. Maybe more movement options would help the player feel like they have more control when evading her foot steps at massive sizes, the warp crystal is very nice but by itself the cool down is long when considering her stomping constantly. i also found my crystal was getting destroyed by her foot collider often, which is enormous and active most of the time during the minigame (example vid attached).
I also tried what you said when you described her behavior during the minigame, trying to get behind her and not camp her feet. I dont know if she was just too big when i got to the minigame (she was mostly 2000m when i got there) but like yequalskx said i feel like i am always under her feet because she just out paces me when shes so big that i feel i am always avoiding her feet underneath her and shes so big that i cant even reach anywhere near behind her before she adjusts and stomps again. Maybe when shes that big she could use a new attack thats devastating but slow like she drags her foot through the town, or for now just slow her down as shes bigger or give her an exhaustion period.
2. The massive hills has been bugging me for a bit, I do like the idea of her terraforming the land as she gets massive but the way they are right now it feels kinda cumbersome and weird at bigger sizes. when she gets super big every time she steps it feels like dirt fills in out of nowhere constantly, sometimes making jagged terrain and when the houses regen they delete the dirt to restore the plot so it gets disorientating quickly when you constantly have dirt filling in and you get stuck in it and then houses respawn all around you and you fall in the hole thats made and you get stuck in there. Could maybe tone down the hills a bit as shes gets bigger.
Although these things mostly happen when shes really big and during the minigame, thats not what your designing around so maybe it could be a your just screwed moment, she got too big which is fine. Ill keep playing as we go along and feel it out better. I hope its not too annoying to impliment a cheat to skip to the endgame cause that would be nice for testing.
Forgot to mention before but the subtle toe animations are much appreciated