#1 At the beginning of the level, when you explode the tunnel in the pool, explode also the rock at the end of the tunnel. It blocks the access to the first secret.
#2 Go to the second, short tunnel and turn left. Kill bad guys and explode the tree. It blocks the second secret.
#3 Go again to the tunnel, kill assault trooper and explode your way from the pool to the third secret.
#4 When you jump on the small waterfall near secret #2, you see bloody hand print on the wall. Use it to get fourth secret.
#5 After using Blue Access Card, shoot the "glass wall". It reveals switch which gives you fifth secret.
#6 After activating the waterfall, open the wooden door, turn left and jump on the top of the waterfall.
#7&8 When you get to the wooden bridge, you see big waterfall on left. Run and jump towards the waterfall. You will drop to a pool, and you can find the secret #7: A Jetpack, A Pearl Health and a message from level author. Use the elevator to get back up and collect secret #8.
#9 At the end of level, before you go to the small tunnel where water flows, above the tunnel is a ledge. Get there and behind the wall is the last secret place.
- When the player reaches the area with the long bridge, the title theme will start playing for some odd reason. This also happens in The Alien Remains.
- There is one Assault Captain in this level, the only one in the entire add-on. Though once it disappears, it will no longer appear.