Lighting isn't my strongpoint, but don't forget to try some of the alternatives. To brighten figures that are too dark, try setting the ambience to a dark grey instead of black in the materials settings. Also try changing the colour settings or using a different texture. Don't forget you can make spotlights point at any object (I usually use an invisible 1 polygon target prop which I move around until the light points where I want it) and you can change the intensity and radius of the spotlight. It's worth reading the manual on what the spotlight dials do. You can harden the shadows, soften them etc.

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