This is, I think, a Brown Centipede Lithobius forficatus, an introduced species. Very impressive creature. The front legs contain venom that helps them take down their prey, like slugs, worms, larval insects, etc., in short, other things found under rocks and bark.
Centipedes have the mien of the rapacious predator they are, but I wonder if they are any more agressive than millipedes scaled to the same size?
Old joke:
If a centipede a pint
and a millipede a quart
how much would a precipice?
If you don’t get the humor try reading it aloud.