When you come to an interested object, or if the mission requires you to drop them off at a specific compound, you simply kick them out of the buggy. But careful, because once you kick them out, you wont catch them so easy as the first time. Argh, the discusting bugs got me. Gathering crystals is useful for upgrades. Driving the ACAM, and shooting with the vehicle is fun, because the controls are simple.
Any rookie can concentrate on destroying the enemy, instead of having to fight the vehicle controls.
There are even strategic elements of the game, which the player has to explore in order to succeed in some of the 30 missions. For instance, you have to plan the assault and capture of an enemy base in one of the missions. The game features a pleasant 3D engine, which smoothly textures the weird alien terrain. It simultaneously shows masses of strange creatures, huge explosions, and man made creations on the same screen. Many 3D engines can barely cope with objects in air and shooting-like when the character is in the air shooting down at his opponents.