First of all, mods, let me know if this doesn’t fit here and I’ll remove it.  
I figured this subreddit would be the best place since most people looking to climb Celeste are likely here because of the game.

Now that’s out of the way, I wanted to share my experience to help potential future climbers with some information.

I attempted to climb Mt. Celeste this past weekend but was unsuccessful for a couple of reasons. The main factor was the weather, which I couldn’t do much about since it rained pretty steadily the entire time I was in the area. The second issue was that, after a certain point (the orange circle in image 2), the path more or less disappears and the trees and brush become very dense (see image 3, the sides of the entrance are basically what it turns into). It looks like the area has finally recovered from logging in previous years, which makes it tougher to traverse. It still seemed doable, but combined with the weather, I decided not to push for the summit out of concern for injury.

On my way back to the car, I met a hunter who suggested the yellow route. He said it had been logged more recently and might be easier. I cannot personally verify whether it is a good option, but based on his description and what I saw on my navigation app, it looks promising.

The logging road is only open on certain weekends (Saturday/Sunday), and the gate status gets posted on the Mosaic Forest website the Thursday or Friday before. The gate I used was Comox Lake Main at 7 km. Note that Vancouver Island does have a wildfire season, so many gates are closed in summer and fall. There are also signs saying no overnight camping, but it does not seem to be enforced as long as you leave before the gates close for the week.

The road is driveable for most cars up until roughly where the yellow route begins. After that, larger rocks could damage regular vehicles. Cell service also becomes unreliable around the yellow circle area, and eventually drops completely. It never came back for me. Please bring another device for navigation and communication (I used a Garmin InReach Mini 2 without issues). Beyond the orange circle, it is very easy to get lost. If that happens, the creek is almost always audible and can be followed back down.

I plan to return to Mt. Celeste again at some point, hopefully with better weather, but until then I hope this helps someone with their climb. Know your limits and be mindful of the risks you are willing to take.

If you have any questions, feel free to ask!

Mt Celeste IRL