Pros:

+ Fairly accurate to the ride
+ Backstage areas/gates blocking the flume add variety when playing through on foot
+ Nice to be able to ride the ride zombie-free
+ Seeing Special Infected in place of key characters from the ride is funny

Cons:

- Difficult to tell which zombies are set pieces vs. which are actual enemies when fighting a horde
- Hard to find your way sometimes - took me a while to get past the well/auction scene area
- Couldn't start the finale - button to open the gate didn't respond to being pressed for me

Conclusion:

Very nice. A couple of bugs in the zombie-filled version, and it's annoying sometimes to realize you've been shooting at a set piece rather than an actual zombie, but the ride is re-created well and well-adapted for use as a campaign. Definitely worth checking out.

Pros:

+ Very accurate re-creation of the ride, even considering the necessary changes to make it function in the Source engine
+ Fun finale
+ "Free-Ride" version is a nice touch

Cons:

- Not a lot to do gameplay-wise during the ride
- Locker area towards the end of the finale is glitchy - I couldn't climb over the fallen rubble, then got stuck and couldn't move and had to end the game

Conclusion:

Very, very nice work rebuilding the Indy ride. The break in the middle of the ride for a scavenge challenge was well-integrated. The finale was fun, but there was the above-mentioned nasty glitch towards the end.

Overall, an excellent effort that's well worth checking out if you're a fan of the ride.