[Sonic Unleashed PS3] Spagonia: Rooftop Run Day ~ Acts 1, 2 & 3 (S Rank)

Probably my favourite Day stage and what a better way to show it than with some glitches?

The first one is very easy to replicate. Notice how Sonic bumps on a roof right at the beginning? This makes the game unable to pinpoint Sonic's exact location, so it has some issues loading the assets needed as he goes through the stage. The glitch only affects graphics, all collision data is intact so there's no risk of going through the floor or anything.
As for the second one (2:10), a bit of the wall behind the springs is solid so you can keep wall-running if you short hop over them. It's more useful in speedruns because, if you go up, you can end up out of bounds and skip the whole clocktower area.

Glitches aside there's not much to mention about this stage, it's pretty straightforward. However, you do have to be careful during the Aero Chaser segment right before the Goal Ring, sometimes the robots will fire their lasers during an autorun zone, meaning there's no way to avoid the hit, and some pilars can move Sonic off-axis.