Hop out of the Air Boat & you will see a ladder heading up across from the symbol. Lambda Cache #9: After opening the waterway gate & starting this Chapter, you will soon see a Lambda symbol on a wall to your right. You will come across the Air Boat at the end of this Chapter. The Cache will be beside a corpse.ДЄchievement #7 вЂ“ AnchorвЂ™s Aweigh: Get the Air Boat. Walk up the planks immediately off your left & walk across the pipes to the far wall. Lambda Cache #8: From the last Cache, drop down into a sewer pit that is filled with radioactive waste. If you fall prematurely you will miss the Cache. Follow the planks along, without falling head to the far end across them to find a second Lambda symbol. Eventually, you will climb a ladder & see a Lambda symbol on your left at the top. Lambda Cache #7: After you have to turn the red wheel & fill a room with water, carry on through the sewers. Drop down, & crawl back around under the pipe, the Cache is located beside a corpse. To progress, you will have to break through some wooden boards on your right near a Lambda symbol. Eventually, you will have to cross a large metal pipe with steam coming out of it. Lambda Cache #6: Make your way through the sewer systems. There is a ladder just to the right of the grate on the other end, climb down to loot the Cache. When you walk down the stairs you can see the Cache below you through a grate. Lambda Cache #5: Escape from the helicopter through a blue door further into the canal. You only need to kill five for the Achievement. Roll a barrel down, as the Barnacles begin lifting it up, shoot it & kill a whole whack of them. Round the corner & you will see some explosive barrels & line of Barnacles ahead of you. Carry on past it & drop into a sewer chute taking you into the path of two Barnacles. Climb over a broken red car to find the Cache tucked in behind it.ДЄchievement #6 вЂ“ Barnacle Bowling: Kill five Barnacles with one barrel.Д®ventually as you progress through the canal, youвЂ™ll have to blow up a small bridge in front of you. Drop down over some rubble & you will be able to see a Lambda symbol in front of you to the left. Lambda Cache #4: When you are finished with the mounted machine gun section, carry along the top of the right wall. The Lambda Cache will be found right in your way inside it. You will then have to make your way through a vent. Lambda Cache #3: Leave this building through the back & hop over a fence. The Lambda Cache can be found on the left side under where the flooring has been torn up. After climbing up, head into the boarded-up building immediately on your right. Lambda Cache #2: While escaping the Combine, you will have to jump onto a moving train to reach a ladder on the other side. Head back the way you came, & Barney will show up to drop an old friend off for you. After being teleported further into City 17, you will get stuck behind a door barred by wood. Achievement #5 вЂ“ Trusty Hardware: Get the Crowbar.

Half life 2 airboat walkthrough