Bonus objectives are a new feature in Metroid Prime: Federation Force. They are optional objectives that can be completed during missions to earn points bonuses at the end, which lead to score medals that unlock Paint Jobs. They can range from rather easy in difficulty to very challenging.
Eliminate every Hopper inside each buildingEdit
Don't let any spheres explodeEdit
This is the bonus objective for M02: Hardball. To complete this, the Federation Force must ensure that none of the spheres used for locking mechanisms explode by knocking them off ledges or into hazards.
Destroy 14 Security BotsEdit
Capture 4 or more Ice TitansEdit
This is the bonus objective for M04: Containment. The mission's main objective is to capture four Ice Titans. A fifth will spawn on the way to the Extractor, and capturing it completes this objective.
Break all destructible objectsEdit
This is the bonus objective for M05: Excavation. There are 60 breakable objects throughout the mission, such as rubble and debris. Destroying all of them completes the objective.
Unharmed while outside MechEdit
This is the bonus objective for M06: Infiltration and M20: Insurrection. It requires the Force soldiers to take no damage while they are outside their Mechs. If careful, this is an easy objective to obtain as the suitless sequences in both missions do not last long and there is an emphasis on stealth during them. However, in M20, this objective becomes extremely difficult for the second, third and fourth soldiers, as only the first Marine will recover their Mech shortly after losing it. The other three Mechs are found later on in the mission.
Extract without being frozenEdit
This is the bonus objective for M07: Cauldron. This requires the Force to complete the mission without ever being frozen by attacks from the icy creatures present there. This can be quite difficult during the Sawken battle as they fire ice projectiles that can freeze the soldiers on contact.
Retrieve 7 or more recovery PodsEdit
This is the bonus objective for M08: Dustoff. It requires the Federation Force to launch the seventh and eighth Recovery Pods before extracting. The mission only requires six to be launched for the mission to succeed. Completing this objective requires vigilance, as the Pirates can destroy the Pods before the Force has a chance to launch them.
Retrieve the extra cartEdit
This is the bonus objective for M09: Blender. It requires the Force to extract the second cart of power cells after bringing in the first. This requires the first cart to survive attacks from the Space Pirates and Bion's severe electrical storms, and is a long and arduous process as the carts move very slowly.
Destroy every dropshipEdit
Eliminate 10 GeemersEdit
Stop enemy at 200m or moreEdit
This is the bonus objective for M12: Last Stand. It requires the Federation Force to destroy the Rohkor Beetle before it gets closer than 200m to the unmanned probe they are protecting. This can be very easy or difficult depending on how many Force members are present during the mission.
Take no damage from the gasEdit
This is the bonus objective for M13: Phantom and M18: Hightower. It requires the Force to take no damage from the Talvania Gas encountered in either mission. In the latter mission, there are high concentrations of it at the base of the Drill the Force is protecting. It may be necessary to jump down and shoot ground-based enemies, which will forfeit this objective.
Destroy 20 SentinelsEdit
Eliminate 20 ZurburatsEdit
This is the bonus objective for M15: Mother Lode. It requires that 20 Zurburats be killed. This is easy to do in a corridor following the second large chamber, where a number of Zurburats spawn behind the moving Cargo Tram.
Don't lose any spheresEdit
This is the bonus objective for M16: Slipstream. It requires that no spheres be lost during the Pirate Warship battle. This can become difficult when the Warship's bombardments open up holes in the ancient skiff, making movement of the spheres used to attack the Warship tricky.
Each player retrieved an eggEdit
This is the bonus objective for M17: Infestation. It requires each Federation Force soldier to retrieve a Metroid Egg, on request of General Alex Miles. Carrying a Metroid Egg requires the Force to charge it into their arm cannon, leaving them unable to shoot unless they put it down. They can be picked back up, however.
Hit the Ice Titan with an icicleEdit
This is the bonus objective for M19: Incursion. It requires the Force to detach an icicle from the ceiling in the room where the Ice Titan is encountered, and have it hit the creature. There will be cracks in the ice on the floor that show where the stalactites will land. The Slow Beam is helpful in getting the Titan to stand on these spots so the stalactites can be shot down.
Avoid the mainframe's lasersEdit
This is the bonus objective for M21: The Core. It requires the Force to take no damage from the lasers fired by the Mainframe. This refers to the larger, spinning lasers it fires once the cannons have been destroyed, and not the lasers fired by the cannons themselves. The Shield Generator can stop them from damaging the Force. In the final phase of the battle, a laser will also be fired above the Force, stopping them from jumping to avoid the bottom lasers as easily.
Avoid Samus's bombsEdit
This is the final bonus objective, for M22: Convergence. It requires the Force to take no damage from Samus Aran's Bombs during the battle against her. The Bombs can be destroyed by their weapons fire.