The soft cap on the levels is 20, but you'll gain "motes of light" by continuing to gain experience after that. These little beauties will give you the ability to buy pieces of armour with a "light" attribute, which will further increase your level :) but nobody knows how far we can take this, the highest I've seen so far is 33, but I've heard people mention level 70 guns and one guy reckons he saw a level 200 character :) hope this helps bro