Bulletstorm

To earn this achievement, you must complete 75% of the skillshots. For a list of skillshots without going into the game, check out this page:

Credit to Ripten for their complete guide of skillshots: http://www.ripten.com/2011/02/23/bulletstorm-skillshot-guide...

Credit to GhamTK for the video guide, also featured on Ripten.

There are 131 different skillshots in the game, so multiplying that by .75 gives 98.25 so it should pop after you get 98-99 skillshots.

If you have trouble getting specific ones, you can click select to view the skillshot database and be able to read a description for most of them and just follow what it says.

This one will take some time to do, and requires a bit of luck for the ones in the last column on the database, since they appear to be area specific, so it's really just a matter of grinding it out killing enemies as many different ways as possible.