The helmet appears to be an early form of the common nasal helmet of Western Europe which is at least as old as the Late Bronze Age. My guess is that it would have been constructed of boiled leather over a wooden frame, the kevlar of its day. The guy's dress is commonly thought to be a patterned tunic, but I wonder if it is instead scaled armour, also of hardened leather. Someone's probably mentioned that before, but I can't think who off hand.
One of the interesting things about Bell Beaker men with dagger injuries, they are most often found in the armpits and forearms, at least in Britain. As demonstrated in the video linked above, in a knife fight you have to get under the scale which indicates how the knife is held and thrust. But it should be remembered that body thrust wounds may be under-represented in the skeletal record.
|Doctored Late Sion Stele by Sebastian Favre, right (Bocksberger Memorial Site)
I'm pretty sure those are amber beads around the guy's neck. I don't know if this Gimli was a lord or a war king, but he was important no doubt.
One interesting bit is the changing pattern from chest, the apron, then lower portion. It can't be a single tunic, or at least it wouldn't seem so. I'd propose that there are two layers of scale, the outermost covering the torso, and then the actual tunic is the bottom-most pattern. Maybe you see something else?