So as i am guessing, someone will for sure come up with making a full achievement list, i my self don't have time to do that all but here are all the PvP achievements
There is a total of 14 PvP achievements, 12 can be done in less than 2-3 hours, the other 2 are these:
-Enjoy a close, great game ( Win a battle while your HP is below 1%) Title:<Near Death defier>
-With a single hand gesture(Win a pvp battle within 3 seconds) TItle: <Flash>
Those 2 need 10k attempts each, if we presume that you're doing it alone with 2 pcs, with your main lvl 1 alt, each attempt is 30 sec, you would get the both titles, because you can do them at the same time in about 83 hours.
The PvP achievements give 127 achievement points, the 2 with the titles don't give any