Im not sure if the objective have to be put in the map its self of what... I have a feeling they have to be put on the map. So here is a list for all the objectives of all the campaign maps.
Objectives:
1. Dam -
A: Neutralize all alarms
B: INsert covert modem
C: Intercept data backup (refer to game for this one)
D: Bungie jump off of the Dam (refer to game for this one)
2. Facility -
A: Gain entrance to Lab area
B: Meet up with Dr.Doak
C: Rendezvous with 006
D: Destroy all tanks in bottling room
E: Minimize Scientist Casualties
3. Runway -
A: Get plane ignition key
B: Destroy missle battery
C: Escape in Plane
4. Surface -
A: Power down communications link dish
B: Obtain safe key
C: Steal building plans
D: Enter base via ventilation tower
5. Bunker -
A: Disrupt all survelliance equipment
B: Copy Goldenye key and leave the original
C: Get personnel to activate computer
D: Photograph main video screen
6. Silo -
A: Plant bombs in fuel rooms
B: Photograph satellite
C: Obtain telelmetric data
D: Retrieve satellite circuitry
E: Minimize Scientist casualties
7. Frigate -
A: Rescue hostages
B: Disarm bridge bomb
C: Disarm engine room bomb
D: Plant tracker bug on helicopter
8. Surface 2 -
A: Disrupt all survelliance equipment
B: Break communications link to Bunker
C: Disable Spetznac support aircraft
D: Gain entrance to Bunker
9. Bunker 2 -
A: Compare staff/casuality lists
B: Recover CCTV tape
C: Disable all security cameras
D: Recover Goldeneye operations manual
E: Escape with Natalya
10. Statue -
A: Contact Valetin
B: Confront and unmask Janus
C: Locate helicopter
D: Resuce Natalya
E. Find flight recorder
11. Archives -
A: Escape from interrogation room
B: Find Natalya
C: Recover helicopter black box
D: Escape with Natalya
12. Streets -
A: Contact Valetin
B: Pursue Ourumov and Natalya
C: Minimize civilian casualties
13. Depot -
A: Destroy illegal arms cache
B: Destroy computer network
C: Obtain safe key
D: Recover helicopter blueprints
E: Locate Trevelyan's train
14. Train -
A: Destroy brake units
B: Rescue Natalya
C: Locate Janus secret base
D: Crack Boris' code
E: Escape to safety
15. Jungle -
A: Destroy drone guns
B: Eliminate Xenia
C: Destroy ammo dump
D: Escort Natalya to Janus Base
16. Control -
A: Protect Natalya
B: Disable Goldeneye satellite
C: Destroy armed mainframes
17. Caverns -
A: Destroy inlet pump controls
B: Destroy outlet pump controls
C: Destroy master control console
D: Use radio to contact Jack Wade
E: Minimize scientist casualties
18. Cradle -
A: Destroy control console
B: Settle the score with Trevelyan
Bonus: Aztec -
A: Reprogram shuttle guidance
B: Launch shuttle
Bonus: Egyptian -
A: Recover the Golden Gun
B: Kill Baron Semedi?
For all of them, you may want to look at the original maps and go from there.