Run straight ahead. There're some trucks just behind the spaceship (#47). Jump on first one and the convoy will start moving. Kane's position will be frozen - you'll be able only to turn around and shoot. A few dozen seconds later, you'll have the first opportunity to defend the convoy from enemy's infantry. Help your allies in eliminating danger (tip: shoot in explosive barrels). Than you'll ride forward.
After the ride, jump down from the truck. Go into the tunnel on left side (#48) and walk straight ahead. You'll meet Bidwell (#49). He'll order you to jump on another vehicle and take stationary machine gun shooter's position. Save the game, especially when you're playing on higher difficulty levels.
Protect the Convoy
Theoretically, your task is simple. Guard the convoy from enemy's attack. Machine gun has unlimited ammunition (no reloading), so shoot as often as you can and don't worry. Your ride will be split in three phases.
In the first one, the convoy will be attack by enemy's infantry. Hovercraft will trample opponents standing in your vehicle's route, but it's much better to eliminate them sooner. During the ride, a rocket will hit the ground and transform into turret (#50). Destroy it in the first place (new challenges are coming).
Convoy will stop - there're some landmines on the track. Save the game. Sapper will be send to disable exploding traps. You'll have to protect him (#51) from enemy's attacks (right flank). Try to concentrate fire on opponent's groups, but watch out for sapper (some Stroggos will approach from left). He can't die before he disables all landmines, so be careful. When the convoy will start, save the game (again). Last, third page of this ride is the toughest one.
Clear Area of Turrets
Now, Kane will find himself alone on the battlefield. Your vehicle rides in established direction and your task is shooting and some more shooting. Be aware, that in the left, lower corner of the screen you'll see energy bar. Every hit decreases hovercraft's resistance, so don't let it decrease to zero (game over). If you're not shooting, energy will recharge over time. During the fight you'll have exactly one opportunity to increase the energy (after hiding behind the chests). Make it happen.
You must destroy three types of turrets on your way. First one is stationary machine gun (#52). There're six of them on the level (concentrate fire on them for few seconds). Secondly, you'll run into well-known rockets that transform into turrets. Lastly, you'll encounter rockets launcher, placed in the building located in the level's centre. Of course you can shoot down missiles fired in yours direction, but the better option is to destroy launchers themselves.
After the ride, vehicle will stop near the complex. Go inside through the big hatch. In there, you'll find another passage and the panel. Click on the button, and you'll finish the level.