FARCRY 1 WALKTHROUGH Gameplay Mission 4-PIER
0As this mission starts, directly to the right is a hang-glider; run past it and off the cliff for:
Load the checkpoint and take out the guards and either use the hang-glider (recommended for an air kill) or proceed down the cliff path. Using the hang-glider, circle strafe the boat until you hit something, or failing that, die from the ever so accurate enemy fire and try again. If this is done after doing the kills earlier, this should pop:
*Otherwise if it bugs out or something messes it up, try coming back to this later as you should get plenty of kills with land and maritime vehicles as you go.
To proceed towards the next achievement we will need to take out the armory as the stealth, more often than not, fails, so just use the sniper from a distance, taking targets down the hill in the base and in the brush. Take out the nosy helicopter gunner as well. You can then raid the armory and the surrounding buildings for armor and ammo, making sure to take out any stragglers. Get the explosives and the key to get into the armory, then plant explosives in the armory and high-tail it out of there in a stolen vehicle.
Now comes achievement time: keep driving until you come across a road block, take everything out and pull out your sniper rifle. Run back down the road or drive until you have a fair amount of distance from the roadblock, and go prone to snipe the guard in the head for: