Here's a little puzzle for the mind...
Enjoy,
LeMarquis

Part 2: blue spheres
1. Go D through TP. Quickly 2U, 2R. (Pushing sphere, and be at the right of it. Shadow pushes steelbox) Walk D through TP, push steel U.
2. Push sphere R in water, quickly push steel to where sphere was. Just before other sphere arrives, step L. Push steel 1R (blocking Shadow)
3. Get coin bottom-left, slide and jump R. Push sphere L over tramp. Push steel also L, and quickly slide R, (through TP) and step U. (before steel)
4. Push upper sphere U and quickly go RDR. (upper steel in water) Go D through TP and push steel U on icecurves.
5. Go D,R,L and D through TP. (Shadow pushes sphere L) Walk LD and back. (To get Shadow out of the way)
6. Push sphere U, step R, and with the right timing push steel 2D and step L.
7. Steel R in water, sphere D and R in water, and with the right timing step L. (avoiding last sphere)
8. Go bottom-left where coin was. (Shadow gets coin on yellow button) Step R and D on ice. (Shadow puts flame out)
9. Push sphere R on yellow. Push cannon and barrel U over tramp and follow.
The strange thing I was talking about:10. Get coin left-below generator. Push sphere R and quickly push it U. (starts generator)
11. Sphere L. Prism L and D. Sphere U (and step out of the way. Other spheres goes in water)
12. With right timing prism R and step D. Spheres ULULD. (See screenshot) Spheres L (middle and lower spheres destroy each other. Upper one remains)
13. Prism 2U,L,U. Sphere U. Prism L,3D,R. Sphere L. Prism 2U (Sphere below top-left icecurve, prism right of sphere)
14. Push sphere U and quickly prism U. Sphere U in water and quickly prism L,2D (before new spheres come)
15. Prism D,2R. (above sign) Get coin. Spheres L. Prism D. (on sign) Sphere L and stand right of sign. Sphere U and exit.
11. Prism D. Sphere L and U. Other sphere (from the left) U again.
Prism L. Sphere from the right U in water.
Prism R. Spheres RULU LD
Now the situation looks exactly the same as on the screenshot. But when I push the spheres L, the upper spheres be destroyed, and the lower one remains. So I can't finish the level.
... to destroy the sphere below the generator:
10. Push sphere R and quickly push it U. (starts generator)
Prism D. Sphere L
Sphere U (Loof quickly D)
Sphere R (wait until sphere hits coin)
Prism U
Sphere U (Loof quickly D). Loof takes coin
Prism DLU
Sphere L, Quickly prism D (Sphere trapped)
Sphere L when sphere on its way down (2 spheres destroyed)
Prism R
Sphere D
Prism UULU
Sphere U