I'm not really much for Th13teen. There are a few points which are good, but it's mostly bad for me.
The queue is hideous and the outside of the station looks like it's themed to some scaffolding. It gets better inside (though a recent lack of Tesla Coil has been disappointing) and the exit from the station is great as it builds speed quite rapidly and sweeps past the Rita queue nicely.
Onto the main coaster section now. It's utterly meh. The first drop and turn are the only highlights, then in meanders around, looses speed quickly and eventually heaves itself onto the next lift. I also think the bulky lift and supports completely ruin the beautifully slim Intamin track for me.
Inside the crypt is better and the effects and drop are excellent. It looses some of its effectiveness after you've been on it a couple of times, but it's still decent. The backwards helix is good too, although if it snapped the trains backwards slightly quicker and there was some ghostly sound effects to give the impression that you're being dragged backwards by some angry, unearthly force as opposed to feeling like you've slid backwards accidentally.
The sudden stop outside for the run back to the station is all good and I like how you get rushed towards the station.
Then we exit and get greeted by a shipping container shop. Great!
What makes the whole experience worse, besides the fact that they marketed it incorrectly and allowed the secret element to be revealed on GMTV is the fact that the ride, besides the sweep past the Rita queue, doesn't interact with anyone off-ride whatsoever. It just doesn't tempt you to ride it at all. Seeing people riding is always effective as it will impress and/or make people slightly afraid of what they're about to do. Rides like Nemesis and Vampire let you get up close with the ride. You can see all the details and you can see everyone's reactions. You also can't see every part of the ride from one spot, just sections. Th13teen reveals absolutely nothing at all.
Then we have the rest of the Dark Forest. The theming is dire and the faux vines are sun faded and now look blue rather than a mossy green. At least the ride has lots of theming as the coaster twists around the forest... oh wait....
But does anyone ask themselves why they are there? What is the point of the ride? What do you achieve? What are the cars supposed to be? Why is there an, albeit, very cool, Tesla Coil stood in the queue? Why does the floor in the station collapse?
You can probably make up your own reasons for a lot of it, but I feel that more should have been done to explain some aspects of the ride. For instance, they could have stated that you're part of some kind of ghost hunt to banish a demon inside the crypt, you enter the special scientific Arcus vehicles and head out into the forest to chase demons before turning to face the spirit in the crypt. The riled demon of the dark forest attacks you and floor collapses before another demon drags you out and away from the bottom of the crypt and the next load of riders have to try again, each failing.
Obviously that's still no exceptional story, but I came up with it all in a few minutes. This had months and months of planning and it still doesn't really hit the mark.
Overall, it's still a good family coaster, but it could have been so, so much better. I'm probably being a little harsh, but there shouldn't have been so many negative points for what was the first Secret Weapon coaster to open in a number of years. There are very few people who find themselves questioning how good rides like Nemesis, the Runaway Mine Train, Oblivion, Vampire are because they do everything they should do exceptionally well. I don't think we'll ever see rides like any of those ever again.
Feel free to tell me I'm too critical, but those are my opinions and I stand by them.