In addition, if enough prisoners are rescued, a weapon upgrade will be yielded during the unloading process to the rescue helicopter.

Players who land at certain points in a level will be able to pick up weapon upgrades and ammunition.

Due to systematic weapon upgrades, the effectiveness of bomb-dropping reached 90%.

Various weapon upgrades can be found during gameplay.

While the player is only given a semi-automatic pistol in the beginning, weapon upgrades are available as targets.

The player must collect weapon upgrades and operate various machines to combat the alien enemies.

Expansions include new maps, weapon upgrades and character customization options.

Also acquired are research points, which can be applied to learn weapon upgrades, and programming changes to the Agent's individual powers.

Other weapon upgrades are available in Rising Mode as well.

Items include weapon upgrades and a shield that absorbs one fatal hit against the player's ship.