I found the vortigaunt secret, also, hitting the vortigaunt kills you.

+1

I have found the radio that plays a line from HL: opposing force, and the classic doom music at the sniper range, as well as the vortiguant and the one by the trash compacter. I also found the nuke secret where you go in the nuke and press a button to luanch the nuke, and when you press your use key on the deagle in the armoury it plays another line from HL: opposing force and drops all of your weapon, and the cod ww2 killroy thing on the wall at the sniper range

Nice, there'ss still more to discover =)

Continuing from MajikNinja, I've also found that if you were to press use on one of the tables with sniper rifles at the sniper range, another line from Opposing Force is said. And if you were to press use on either the "Basic Training" or the "Live Fire Range" signs, more lines from said game plays, as well as causing the drill instructor to quote even more lines as you do the courses.

+1 A few more still out there =)

Originally posted by •҉The Flying Flail:

+1 A few more still out there =)

cmon tell us you know we will found the secrets at the end

i found a secret, if you go to one of the corners of the map there is a sniper range and there is also a jeep there with a radio in the back press E (or your intereact bind) and it will start playing doom music (at least i think its doom music

oh wait this has already been explained

There's a Sewer in the Bathroom

@Thug Hunter little, and friendly remind, it's been found my guy.