right at the end of the game, DONT GET IN THE BOAT! get behind the guy shooting at the horde (he's invincible) and use all your ammo up on the horde, if youve got a decent amount of ammo, you can get a fair few levels out of it, especially when you use the points to then level up precision skills.
saying that, try to end the game with 1 weapon of each ammo category, to save time :)
might i add, if you are taken by the vindictus game on the ad, it is only available in the US and canada. check out http://www.facebook.com/VindictusEurope for more details
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