Thank you for your encouragements !
ODST glitcher : i'm sorry, but we've done about 47 glitch tutorials just on ODST (and about 5 or 6 others will be posted soon), and about 160 on Halo 3, so it could be very, very, very long to translate all this stuff, adding the fact that i write English with a very limited vocabulary
But if you want to look on a specific glitch on our forum and try to understand it with the pictures, just know that :
Go into the section
"Tricks, Easter Eggs, Astuces et Observations" which means "Glitches, Easter Eggs and Observations" ; then go onto ODST section, and "Campagne" means "Campaign" and "Baptême du Feu" means "Firefight" .
When you're there, you could find what you're looking for by knowing this :
Every glitch is catalogued by its kind, with a tag before its name : [EE] for Easter Egg, [TRICK] for Glitch, [OBSERVATION] for ... observation !
"Hors limite" = Out of map (and we make a difference between "out of map" and "in a restricted zone of the map, that is usually non accessible" ; for the second kind of glitch, we use the terms "hors carte" )
"zone cartographi(?)e noire" = dark area
"Sur les toits" = on the roofs
I talked about Secret Glyph Project with the others administrators of this forum, and they're quite interested by your stuff here !
If you need some specific glitch like this one in order to make your own investigations go on, Halocreation could take it like a challenge and search to resolve it.
Have a nice day,
Tepec