Yeah, the problem with this game is that the early game is a blast, but the late game is a brutal boring repetitive slog. Part of the problem is that the best part of the game is swinging through the trees in the jungle, while in the late game you're just meandering around a desert. The other part of the problem is that there is no progression past the basic tools you can make on day 1. So at some point, the only new thing to do is find new areas and kill new stuff, and the former has the issue mentioned previously, while the latter is hampered by the lackluster combat (which really just becomes a chore once you figure it out/get enough upgrades to make it overly easy) and really simplistic animal AI that just adds to fighting feeling like a chore, because there's no real challenge in the actual hunting part of it. It's too bad. I got as far as Lucy, but I was never able to get the motivation to finish the game, because it just felt like a chore to play. But I had a great time with the first couple evolutions. Going on huge treks across the map as an ape was both terrifying and fun, especially once I realized that you could hold space while falling and grab onto leaves and branches and swing your way around like that.
I just wish they'd either shortened the length of evolutions, or added other features to the late game evos besides bipedalism to spice up the late game. Even new tools or constructions would make a difference. I guess that'd have to wait for a hypothetical sequel (although despite announcing that they were working on a sequel around launch, they've now said they're working on something else because of lacklustre sales [im assuming in part due to launching first on EGS exclusively, because I know a lot of people who'd never even heard of the game before it came to steam])