Level 7: The Library

One great bit of fun plus a few oddments, for this Flood infested level.

M = has movie coverage

Hot combat

Two door battle - Tactics when trapped between two doors. M

Other highlights

Spore herding - Fun with massive spore swarms. M
Low Monitor - Get the Monitor unusually low down. M

General fun (listed in location order)

Bottom of the central shaft - I don't think you should be down there.
Alternative route to the fifth door - Take a different path for a change.

Minor fun

Playing with lifts - Mess with the transport system.