I just completed mission 4 (don't know what it's called, you land on a beach and have to blow up turrets, SAMs and all that stuff, then hack the ComCenter and finally escape by submarine) the third time and on the debriefing screen I realized that there are 4 tertiary objectives in the mission.

I searched for hours, but I only found 3 of them...
- blow up the power plant
- blow up the refinery
- blow up the comcenter after downloading the data

But - what's the 4th one ? Anyone discovered yet ?

Blow up that really BIG gun turret (Shore Defense Cannon or whatever it's called) BEFORE destroying the SAMs.

If you destroy the SAMs, a helicopter comes in, bombs the turret, and it doesn't count for the objective.

In my opinion, it makes no sense...
Why the hell let Havoc risk his life and waste TONS of C4 on that turret (I remember, I tried to take it down, planted one charge on it and it almost did no damage at all) if a helicopter can do it easier and without risking anything (since the SAMs are down) ?

But anyway, that's the objective...