- Broke time itself and created an entity which threatened to destroy all logic in the universe.
- Trapped a certain person in a stuck moment in time in the process of doing the above.
- Did not kill aforementioned entity.
- Which just meant that other people had to deal with him instead.
- Adopted a princess.
- Drank all of the wine.
- Left temporal messes everywhere.
- Did all of the housework generally without complaint.
- Made whatever Yuuko wanted for dinner.
- Did not smoke in the house, even when no one was looking.
- Did not make very bad puns, even when it was completely appropriate to do so.
[ text, added later: ]
My, that's quite a list. Surely I did more good than that, though?