(as i have recently mentioned on the ts 100% challenge thread i will post some cool errors in my ts:fp here!)
Through the story timeline.... (after a playthrough yesterday)
In the first map, Sniper Cortez never appears. (the bastard!)
In Scotland the brave, sometimes there is no tank boss, nor jungle queen.
In the Russian connection enemies don't spawn in the protectingharrytipper challenge
Also in the Russian Connection, the drunk guy on the water tower is floating in midair.
In The Khallos Express in the cutscene Cortez is pushing invisible people off the train.
Again in the Khallos Express, Strudel Never Appeared. I couldn't beat the level. (fortuantely I had already unlocked the other levels)
In the Mansion of Madness... Zombies in the room with the billiards table took 20 minutes to spawn, and they all appeared at once.
In What lies below, princess spawned, and took damage when I missed
(the game is then fine until the last level)
And during the last level, Time Assasins are hovering.
great fun. I'll try to record sometime.