Snake's Revenge/Part 4

Enemy camp
You have arrived in another enemy camp. Nick will contact you, to tell you that the mission is still "go". Go north and open the door above with Pass Card 4 to stock up on plastic explosives. Go north again and open the door with Pass Card 2 to fill up on oxygen tanks. Return to the previous screen and head left. It seems that you are at a dead end. However, if you equip the X-ray viewer, you will find that there is a weak spot in the horizontal wall. To reach that point, however, you'll need to equip the power armor and push the square boulder blocking the road to the left. In this way, you will be able to place a plastic explosive at the weak point of the wall and open a gap (note: never remove the power armor while you are pushing a boulder or it will crush you, killing you instantly). Unfortunately, the explosion will also attract the attention of the enemies, who will give the alarm. Then open the door to the north with Pass Card 1 to free a prisoner. Go north and defeat the enemies that will come running. You'll have to break down another weak wall here, to the left. Proceed north and break down another weak wall to the right. After taking it down, proceed in that direction (going south is useless). In this screen, you will have to make your way by moving the two boulders with the power armor. Reach the southern opening first and enter it. Open the door on the right with Pass Card 2 to free another prisoner (your rank should rise to 4). Go back and this time reach the door above. Open it with Pass Card 2 to find a telescope. Exit, go north and open the door with Pass Card 4 to find a shotgun. Return to the previous screen and open the door on your right with Pass Card 3.

You will enter a floorless area, with some platforms that move horizontally. You will have to use these platforms to reach the door on the right wall of this area. If you take the other south exit instead, you will exit through the lower door of the screen you entered. Be very careful, because if you fall into the void, you will die instantly. Once through the door, you will be outside again. Break down the two weak walls with the plastic explosive and go south. Eliminate the enemies and open the left door with Pass Card 4. In the room you will find some claymore mines. Ignore the right door, which you cannot open, and destroy the sandbags with plastic explosives, just like you did in the previous enemy camp. Quickly jump into the hole to enter another side scrolling area.

Side scrolling area 3
Again, if you go left, you will return to the previous screen, through the door you saw. All you have to do in this side scrolling area is to proceed to the right, avoiding being seen by enemies and surveillance cameras. There are no water pools. If you crawl, you shouldn't have much trouble killing enemies without being seen. Be careful though, because if you are spotted, bombs will start falling from the ceiling, causing massive damage. Continue until you exit this area. Cross the small room and take the elevator to go up to the upper level and return to the enemy camp.

Enemy camp
Move the square boulder with the power armor and head left. Jennifer will contact you, telling you to join her at the enemy base. Then open the only door accessible with Pass Card 1 to fill up on ammunition. Go south, left and south again. Move left and go north. Open the door on the left with Pass Card 2. Inside you will find some mines. Take as much of it as you can, because you will need them soon. If you wear the X-ray viewer then, you will notice that the wall on the left can be knocked down. Destroy it with a plastic explosive, defeat the enemies and go north. Open the door on the right with the Pass Card 3. You will enter another floorless area. Use the moving platforms to reach the lower right door (entering the left one is useless). Go south and destroy the sandbags with plastic explosives to reveal the entrance to another side scrolling area.

Side scrolling area 4
As always, if you go left, you will return to the enemy camp, through the closed door. Proceeding to the right, you will have to eliminate a couple of enemies, then you will have to overcome two long pools of water, one after the other, with sensors on the surface and mines on the bottom. Avoid touching the sensors at all costs, immerse yourself in order to pass under them. Oxygen tanks shouldn't be missing. If you find yourself in the unpleasant condition of having to choose between hitting a mine or a sensor, always choose the mine, which does moderate damage and does not trigger the alarm. Once you have passed the stretches of water, you will have to face a couple of more enemies and then you will exit this area.

Cross the small room and take the elevator to go up to the upper level. Open the door on the right with Pass Card 4 and prepare for a tough battle.

Boss fight - Heavy Tank
Once through the door, you will find yourself in front of the entrance to a bridge, which crosses a lake. This battle takes place in three screens: the bridge also continues in the two screens to the north. A tank moves back and forth on this bridge and takes up the entire width, so it is not possible to pass on the sides. However, there are some points where the parapet on the sides of the bridge is missing and you can therefore take advantage of these niches. The tank fires continuously, with its main cannon. The bullets it fires only move in a straight line and are therefore easy to avoid. If you get knocked down by the tank or get hit by bullets it's immediate game over. Even if you fall into the water you will die immediately, so in this battle the rations are of little use.

The only way to damage the tank is to use mines. You will then have to place mines on the bridge, so that they explode when the tank passes over it. You can place a maximum of 3 mines at the same time. Unfortunately, there is no way to predict the tank's movements. Even if you use the telescope, you will not be able to see where the tank is at that moment, so every time you move north, you risk being run over. Always be alert and ready to run south if the tank comes towards you. On the other hand, if you always stay on the first screen, where you are safer, it can take a long time before the tank arrives, passing over the mines. It takes 18 mines to destroy the tank, so the battle is likely to be long and risky. However, there is a trick to destroying the tank very quickly. At the start of the battle, try to go north immediately. In the middle of the bridge there is a point where the parapets are missing. Position yourself in these niches so that the tank cannot run over you. Then when the tank passes you, keep placing mines as fast as possible. The mines will explode immediately, in contact with the tank, so in a very short time you will destroy it. The only thing you have to watch out for is its cannon, which can rotate ninety degrees and could therefore hit you. So move accordingly.

Destroyed the tank, go through the door to the north to enter the enemy base.