This is a guide on how to get to bandit camp and how to get flippers extension. The extension (goggles) improves the items while diving.
If you wish to find it on your own, please do not click spoiler.
Spoiler
1.Start at east Swamp. Have your draisine ready. For the bandit camp you do not need flippers, but for goggles you do.
2. Ride your draisine east (-->) into the caves, untill you see a light and a chest.
3. Approaching very soon, you will see this.
4. Towards the middle, HOLD up, onto an invisible railroad track.
5. Bomb the entrance.
6. In the caves, go up, up, up steps and up. Not too sure which need to be bombed, because i already did it, but I am sure you can figure it out or see others doing it.
7. Use flippers in the water to the left of room.
8. Watch Graalian fall helplessly on his face. Open chest, tada.
Extra sh*t, pro tips:
1. Most boxes can be pushed.
2. If it looks like an entrance, bomb it.
3. Purple chests give good items/loot.
4. Bandits drop a rusty key.