out of curiousity i wanted to make a hack that opens all the doors in the level, but doesn't seem as easy as i thought.
i'm just messing about and testing few scripts, including teleport and speed. it's fun hacking old games out of curiousity, never know what you learn!
i later tried on other maps aswell and it's always the same, if door haven't officially been opened, then there's no way to get into that area. now to think of it, maybe it's not unloaded, but it marks that area as unplayable to prevent any kind of glitching, older games were so well programmed, they hired proper game testers who's job was to find glitches before players did.
i'm sure it's still possible to unlock areas, but as title says -- not as easy as you think! in all modern games you can just teleport thru locked doors or simply force them open and that's it, but nope, not in TR2 (and i suspect TR1 and TR3 aswell).