that depends on which level you are on.
If you are on the swamp, just jump on the floating pedestals and go as fast as you can so the swamp bubbles don' kill you.
you try to beat it
you beat a sertan misson
You zap it until you beat it
you dont
you shoot the patronus charm at them.
After you have 100%, acquired Voldemort and rampaged the city, the game is essentially over.
To beat the Bludger in LEGO Harry Potter Year 1 on the iPod Touch, you need to dodge its attacks while focusing on collecting the studs around you. Use your character's abilities to avoid being hit and keep an eye on the screen for prompts that indicate when to use spells or special moves. Additionally, work with your teammate to distract the Bludger while you gather more studs and progress through the level. Keep moving and be strategic in your actions to outmaneuver it successfully.
There are several versions of LEGO Harry Potter. Each one has a different ending. Sites like GameFAQ and IGN have walkthroughs for the entire games for free. It is best to find a good walkthrough and get the details for the exact part that you are having trouble with.
beat the first level and press return to leaky cauldron.
To beat the dragon, you have to look on Youtube and watch walkthroughs on how to do it.
One of the men has a shovel, so you use him to get past this level.
To complete the whole game, you have to have purchased all of the characters and items as well as complete all the levels.