The giant asteroid is at X-11 Y-84, but you can only remove the Golden Key when you have beaten all three planets and have all three space knights with you.
You keep pushing until it finally collapses (it is dirt, not rock).
It isn't rock, it's dirt. (Surprise) You can push hard and it will collapse. == ==
The wall on the left is made of dirt, not rock, and if you push hard it will collapse.
The wall that blocks the passage on the left side of Mordred's underground lab is NOT rock, but dirt. Push against it and it will fall down.
On the lava geysers of the Fire Planet, you will need to jump from the 5th to the 6th rock platforms when they are BOTH moving DOWN. (You will land on the rock as it is falling under you.)
Just wait until the 5th and 6th lava rocks are both moving downward, then jump. The sixth rock should fall right under you.
In Mordred's underground lair, there is a way blocking the tunnel to the back of the dungeon. But it isn't rock, only dirt, and can be pushed through will a little effort.
In the underground laboratory of Mordred, the wall to the left is not rock, just dirt. Push hard against it and it will collapse. (see related question)
On the Fire planet, cross the lava rocks by jumping when the next rock is lower. For the 5th and 6th rocks, jump when both rocks are moving downward, so that the rock falls under you.
For your first five jumps on the geyser rocks, you jump when the next rock is lower. But for the 5th to 6th rocks, jump when both rocks are moving downward. The rock should fall right under you.
On the Fire Planet, jump from rock to rock as they are lifted and dropped by the geysers. Jump when the next rock is below you, even when you can't see it. For the 6th rock, jump when both rocks are moving downward.(You will land on the rock as it falls under you.)
Yes. When the fifth rock is going UP, and the sixth rock is going DOWN, you just have to jump sideways to the right. The harder one is earlier, when you have to jump without seeing the rock you are jumping to (it is much lower).