Very good.
I have nothing positive to say that hasn't been said below, this was well done and humorous. Anyone who's played Minecraft knows these scenarios all too well. :)
I have one tiny suggestion I think would have added some extra weight to the humor of the exploding creeper at the end. Please consider it as constructive criticism: A reminder of how the Creeper got inside her house.
Here's a template for it: Insert an awkward pause before he blows up with a quick fade to white to the outside of the house and depict a large comedic arrow blinking at the front door she never closed behind her. Probably no longer than 3 or 4 seconds. Then instantly cut back to her with an appropriate expression right before the explosion.
Of course, I'm explaining this provided that your intention was for us to remember the open door. Never assume your audience knows what they should about the subject matter. Sure, we all played Minecraft and leaving your doors open can be dangerous but reiterating that point in a funny way here would only further enhance the joke.
Just something to think about. I find that it works to great effect if one doesn't try to think too hard about what they intend to present and instead looks at how to present it. Your animation and design are great, you didn't miss a step. Timing, however, is everything in comedy.