You serious? This DLC took me less then 3 hours to get all the achievements. It's so incredibly easy. Snap To It - Put a snap flash on an unarmed and armed henchmen, Rather straight forward and can be done rather quickly. The environmental snap happens a little later in the DLC and can't be missed (you put a snap flash on a crane and when the crane move towards the sniper you activate it). The only titan in the game is near the end of the DLC. Press B 3 times (to do that ultra stun move) then put the snap flash on him and activate it. Simple as that. Party's Over - Achievement Hunter has a great walkthrough for it so simply look it up and there you go.