You should also anger Baldi in the 3rd book on the first floor, and the 2nd book on the second floor to get the secret ending.
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So I have anger Baldi on floor 1 and floor 2 but it still gives me the same ending so I try it again with all think pad wrong and anger Baldi in 3rd books on the first floor and 2nd book on the second floor and it still give me the same ending have I done something wrong or have I missed something because I just wanted to get straight to extra mode already