Very satisfying game from start to ... half.

At first you upgrade your ship and weapons, you unlock new biomes and new types of enemies and stuff. Everything is very enjoyable and feels great to play.

The action is great. Although it can tank your fps if you have hundreds of particles blowing around ^^. The whole gameplay loop is good. At least for the first 6-8 hours until you experience everything this game has to offer.

And then you are left with like half of the game left to explore that has barely any objectives (you get some quest very sporadically, every 3-4 levels or so). Most of quests are very simple - dig where the arrow shows and collect an item or several of them. That's it. Every level ends once you reach a chest at the very bottom of a level. And for the last 8 hours you are left to do just that - jump into a level, dig straight down for several minutes and complete the level, rinse and repeat. Even the chest is basically at the same spot 90% of the time. There is no fun to be found. It's like the game has all the content in the first half and the second half is just templates of levels that you somehow need to get through to 100% the game.

I think the easiest solution would be just to delete like 40% of all levels (or to add content to them so that every single dig has something more to offer than the repeating gameplay loop). Quality of experience over quantity should be the goal.
Right now this game overstays its welcome for 8 out of 16 hours.

It's like a survivor game but with more objectives. It's GOOD!

https://youtu.be/IZnrmwCuF9A

Ironically the game may not have a lot of mechanical depth but for how long it does last adding mechanics the experience is rewarding enough to be worth the time.