Kao The Kangaroo's The Dark Forest is a menacing stage filled with dangerous enemies, sentient vines, and deadly swamps. There are also a wide variety of collectibles wedged in every nook and cranny. Thankfully, we can tell you exactly where they all are!
Related: Kao The Kangaroo - Beginner Tips
One thing of note is this stage only has a few runes and a few chests. However, it has a ton of crystals. Some of these crystals seem to have been concealed by a real sadist, too. There are also quite a few heart pieces. Once you have finished this stage, you should be well on your way to another heart!
On your right is the first crystal (1/12). There is another crystal (2/12) above you on a platform to your left. Jump up on the nearby rocks and grab it. Continue down the path until you encounter a clearing filled with stacks of coins, bear traps, and a couple of crystals. Grab the crystal (3/12) on the right side, using the bear trap spring to launch you upward. Pay close attention to the rock wall on the right, there is a gate tucked away that you can easily miss.
Roll under the gate and you will find a treasure chest loaded with coins. Once you finish with that clearing, you will reach a checkpoint bell. Now you will have to fight a flying enemy. Push forward, and you will have a brief platforming section. Jump from island to island, and don't dillydally, as there are thorny sentient vines looking to give you a lashing. Once you get past the sentient vines, take a left and climb around to that house you saw before with the crystal in front of it. Grab the crystal (4/12) and bust the door down of the house to grab a heart piece.
If you want, you can just jump on the level bell and double jump up to the house. That will skip
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