I’ve had success doing that too. Buttload of traps. The raids that will circumvent your traps are definitely a problem though. Also the raids that just have a bunch of grenadiers can destroy your defenses in no time.

Rimworld definitely makes it harder when you’re doing well. You can control the parameters a bit though in the storyteller settings. It depends on your colony’s wealth, number of people, how long it’s been since something ‘bad’ happens (colonist dies or gets injured), etc.

Outer Wilds and the DLC are such amazing games. Highly recommended. The DLC does get kinda spooky sometimes.