very nice site,
i think your chinatown slum is your best piece. still, the upstairs i felt could use some polishing and additional detailing.
overall, looking at your work here, i think you've shown good competencies in texturing and modeling, with a more involved interest in texturing, uncertain of your full technical understandings of the processes, but you share some nice texture flats and nothing too terrible in your wire shots. regarding, specifically,the decoy gun, the polycounts seem a little heavy for the end result, meaning, the texture resolution and treatments do not warrant the amount of polys used. but again, it's just a portfolio peice, there are no real specs, so i always consider portfolio pieces that are made just for show on loose ground in terms of how many polys should be used.
the work you have definitely matches what you're selling yourself as, which is an environment/texture artist, that's a good thing for a portfolio and also, i feel it's good to have a known focus so you have control over what direction you'll be growing in.
your texture work tends to looks the same, it's very desaturated, you don't seem very brave with your color, and yeah, i do kinda see that as a bad thing
but that's just me personally. i don't see a very good variety in defining different materials and the majority of your work is poorly lit, you should definitely look into that as an environment artist.
so i mention those few things with the intention that you'd challenge yourself to grow in that direction and wouldn't take it as "my work sucks" because it doesn't, it's good, i just wanted to highlight some areas i thought you may want to work on. ;)