Pickory/YMMV

That One Boss: For at least one troper, it was General Tor for quite a while due to one specific part of Tor's pattern, but for others it varies greatly. This is probably because most of the boss fights have you either controlling a new weapon ( the reflector and portal gun) or have a Unexpected Gameplay Change in some way ( the aiMir fight) which will throw you off balance until you figure things out.