The title is very literal, so you know this is a roguelike game. It can be hard to understand some mechanics, stats and else but the more you play, the more you learn and enjoy every bit of loop. You'll spend hours playing, managing the base, learning about the history, enemies, stats, farming resources ... Just to start a new play to see if you are able to get to the end.
You can decide to leave the loop whenever you want to get all the resources collected through the play or you can be more greedy and risk almost everything to beat the boss. But even if you die, you'll get some resources so you can keep advancing outside the gameplay.
The art it's also outstanding.
If you get into it, this will be a very satisfying game for those who loves the genre.