looks a bit like Spellbound and Knight Tyme for the C 64 ?!?

You're partly right - it's for the C64.

how about some hints?

1st hint:
May people don't even know this game came out on C64 - it's better know for the Spectrum ZX.

Magic Knight: Stormbringer?

If I am wrong, can we get another clue? :D

Next clue (because you were wrong Frodo).

2nd Clue:
The title of the game is a man's name (it should be in the screen, but I painted it over).

arrgghh I saw that hero. I am quite sure that the box had the knight on a horse on it. I think the knight had a lance. But I cannot remember that damned name ...

I'd be wery surprised if there was a knife with a lance in this game...
The whole game is taking place in some undergroud caverns (possibly inside a piramid)...

oh ... then I am completely wrong ... and I have NO idea what else this game could be :cry:

3rd hint:
Are you hanging in the ropes