I have all the timed unlockables on easy and all of them on normal (save the mansion).
I also have all the timed unlockables on hard except for Tomb, Chinese, Cyberden, and Mansion.
I can't even BEAT the Mansion on normal, the shotguns cause way too much damage, and even taking my time I can't even seem to get to the bag 95% of the time. I MUST be missing something since I managed to beat every other level on hard AND have gotten almost all the timed secrets. --- Thugs-4-Less. If it ain't broke, we'll break it. "Marking topics is for virgins." - FPrefect
From: ThAce6 | #002 It may be a better idea to just try to run through most of the level, ignoring most of the enemies.
A lot of the enemies are spawned after certain time limits pass, so you can avoid a hell of a lot of trouble by just going ape**** and speeding through (especially once you start messing around on Hard). If you must take your time though, here's what I do:
http://www.youtube.com/watch?v=c6MxKGrhSKs --- The noblest of all dogs is the hot dog: it feeds the hand that bites it. DOOMBEARS - The Teddy Bears' Picnic: http://www.youtube.com/watch?v=zIgyt27oR8s
I've tried running through it a number of times, I suppose I just need practice. I usually get stuck in the zombies in the basement, or get killed by the two jacket zombies guarding the stairwell after the main room. It doesn't help that I forget where to go late in the level, as I rarely ever get that far xD --- Thugs-4-Less. If it ain't broke, we'll break it. "Marking topics is for virgins." - FPrefect