All the events ive seen that you can encounter:
1. Startling statue can appear behind you while you looking at the cams
2. Power going off (according to game code this is an event)
3. 106 victim
Stuff ive seen in alpha test (not sure if it still is in)
D-9341 going around the facility
Guard roaming
random scientist Scared
Guy in pain
and thats all i know