The planet Pandora is a hostile place. Fanged Viperwolves stalk the foliage, ready to pounce, and larger beasts that are much more difficult to put down can charge you at a moment's notice. Taking them down earns you experience points, which in turn are transformed into upgrades for your arsenal and equipment.
Playing as an RDA soldier in Avatar allows you to wield a chunky arsenal including machine guns, pistols, flame-throwers and grenade launchers. You will also get to pilot gunships and operate giant Mech suits that come kitted out with mounted machine guns, ideal for inflicting high levels of damage to some of the game's larger enemies. When choosing to play as the Na'vi, your weaponry is much more basic, but if used correctly, just as powerful. In your battle to defend Pandora, you will use everything from bows and arrows to staffs, swords, crossbows and explosive noxious gases.
The Na'vi are much more melee combat focused than the RDA forces, so you will have to get up close and personal in most battles to finish an enemy off swiftly. Both sides also come equipped with skill enhancements including invisibility, healing and speed, which can be triggered using a combination of the L and action buttons. Over the course of the game you unlock a vast amount of these skill enhancements and can swap them in and out according to your needs in battle.