User blog comment:Damac1214/Extinction Mode Reveal Trailer Released/@comment-5610200-20131030015320/@comment-13937974-20131030230954

You can but not to the same degree as multiplayer, its like Black Ops multiplayer where different role had different looking armour (Flak Jacket, Scavenger) and as you level up you can add pieces to hit like different coloured armour, slightly stronger armour a different mask and so on.