This is incredibly cool to see, and the viewmodels are excellent. Gordon feels enough like Gordon that I keep pressing the quicksave button only for it not to work because this isn't actually Half-Life, and if you've never played SRB2 as a first person shooter this is a good one of those to check out.
It definitely needs some work, but it's also stated as unfinished. Cannot wait to see later versions, and what's here is already pretty fun.