Naughty Bear

As it says in the description Get one of the following. So if you get 4 Platinum cups before you get 8 Gold Cups you will get the achievement.

Now to go for platinum the best way to get points is to prolong the life of the bears for as long as you can. Use just one bear at a time and make it go insane or wounded but don't kill the bear let it be seen by other bears to get more points.

The more bears you have to deal with the harder it may be just to target one bear.

Also make sure you let the bears call for help if they can (if it is a mission to where you cant let any of the bears escape via car or boat, letting them use the phone is fine) so you can have more bears to kill.

Multiplier is key as well keep it as high as possible!! Use the ice capsules (multiplier freezes and only goes up for a short time)
to keep it high! when it is at X75 or X100 that is when you want to kill as many bears as possible!

Kill with variety! And ALWAYS go for the ultra kill otherwise you are wasting your chance to get platinum!

Traps can give good ultra kills and are useful for boosting insanity rates faster if you need the bear to go insane

Sabotage as much as possible to where the bears can fix said items (cars, boats, barbecues, coolers, etc.) When the bears go to repair its a great chance to do a ultra scare or ultra kill to get large points.

Don't always use the same weapon! using the same weapon or tactics will lower your point gaining so try everything (don't always make the bears kill themselves either because it will also loose points for non-variety)

Choose a good Naughty that suits you too. I like using Cop Gordon or Sheriff Naughty because you can walk freely and sabotage in front of the bears to set up good combos.

Each challenge is different in it's own way so make sure you find out what to do before you try going for platinum.

Also anything that has to do with bonus points or destroying important items are NOT affected by the multiplier so save these for last.