Quote by DoS:
1. Put lights on my map, but they are so dim. Can´t I make them stronger??
Light intensity can be adjusted by changing properties "Radius" and "ColorMultiplier" or "DiffuseMultiplier" of light entity.
Quote by DoS:
2. How can I plant "dead people" on my map(Example: Crysis 1, 1st Level, Aztec hanging in Tree and dead Koreans lying about)??
Look how it's done in original "Island"-level

Quote by DoS:
3. How do u make the LoadingScreen Picture for a MP Map?? Is it just a normal Screenshot in a special format??
Scale image to 1024x1024 and save it as dds-image.
Quote by DoS:
4. Is there a way to make a map load the next one, when the players (not SP, I mean MP) reach a certain area, or at least finish the map with some sort of text??(this is intended for a MP Map)
I don't know about MP, but in SP next level is loaded with flowgraph node "Mission:EndLevelNew".