These achievements requires that you play the game a cumulative total of 30 hours (consecutive 30 hours not required). After earning all other achievements, you will likely need to grind somewhere between 15 and 25 hours, depending on your Angry Birds skill and use of video guides.
You can disable your screen timeout (Settings>Lockscreen>Screen Timeout>Never) and leave the game running unattended while in a level for long periods of time with the phone plugged in. Make sure when you are done to complete the level by passing or failing to save your time. NOTE: This trick is not possible on all devices (screen timeout will be limited to 5 minutes). For those of you that cannot disable your screen timeout, you will need to grind this the old-fashioned way. Load up a level and let it sit while you do something else, making sure to tap the screen periodically before your timeout limit is reached. You could also play the game legitimately, but with such a limited amount of levels, this could be quite boring. Just be sure to complete or fail the level when you are done grinding for the time being in order to save your accumulated time. The achievements will not unlock until you complete a level.