Quote (allience @ 18 Feb 2020 17:22)
I really don’t want to go in depth explaining something that anyone can spend 5 minutes out of their time googling. So I’ll give you a brief explanation of it. If you want to learn more, just google the guide.
All rooms are set when you open maps. If you specific want to farm for a room, always upgrade all the other rooms. If you have t3 rooms, that’ll ensure that room never spawns again for the rest of the incursion, giving you more chances to spawn it. Once you spawn the room you want (in this case, corruption altar) leave the map. It won’t spawn again that map.
Other tips and tricks, always upgrade. If your last room doesn’t have an upgrade or a corruption chamber, don’t do it. That way you have an extra chance next map, since you’ll hit that room anyways.
Oki thanks, I will try that. Basically as Sh00p says, I also indeed Googled myself, but it´s missleading and outdated.
Sooner or later they will have to do a little clean-up in the game to make space for additional features/mechaniques etc. before it gets super messy. It was already super in-depth game before 3.9.