Dark objects - problem

Hi.
I have a problem with dark objects. In blender i turn off and turn on shadeless but it doesn't work. I'm trying to set sun light on objects (with calcor tutorial) but effect is terrible.

Screenshots:
Blender: https://image.prntscr.com/image/5qC1...VnGYsaxOoA.png
Kdff gui: https://image.prntscr.com/image/kki5...3L1S4bHe5g.png
In Game: https://image.prntscr.com/image/PK4N...SowHuGmYNg.png
Kdff gui (with sun - the same effect in game): https://image.prntscr.com/image/vSKs...fKoNIj_f3w.png

What am I doing wrong? Can you help?