Erol was spelt with one 'l' in the last game. I assume this is the same logic that led to the sequel to Jak II being called Jak 3.

I can't tell whether you know this or not, but the ricocheting-shots thing is a feature of a specific form of the yellow gun, rather than something that only happens in certain areas.

...how on Earth did you manage to get run over by the train-thing? Also, that is a very impressive number of tunnel-explosions.