Well, not really a ruining one, but:

I was on the part with the Shadow vehicle. I stuck it with a plasma grenade, it went flying of the cliff, and only 1 elite died. The other one was just standing down at the bottom of the canyon. I had to use devmode to take him out and trigger the next checkpoint and for the door to open.

This happened to me both of the 2 times I played the first version!

I guess thats due to the shadows physics.

So what's up with the Spectre being in a vanilla campaign? Not that I'd like an MA5B with GL. That thing looks unnaturally and ugly whenever you attach anything to it.
A slight state adjust would still have been better. It would keep the clean vanilla look while fixing Bungie's terribad weapon balance.

I liked how the Shadow fits in with it's surroundings instead of being super high detailed.
great job.

What, it looked terrible, and was totally op.

This go around it was very nice! The mod ran smoothly, was more enjoyable (new computer helps make it that way too) and the only error I noticed was that I could run past a Trig Volume and keep an entire set of encounters (as well as the ending) from happening. It's more user error though, considering I've done the same error in a large portion of my own scripting. It was fun, more or less, but the Spectre has a bad projectile that clashes with the consistency of weapon-fire. I rate it a 9/10 this go around.