Yes, its a deliberate choice.
Dishonored is a descendant of the looking glass studio, 0451 immersive sim games, such as Deus Ex. These are games have flexibility, they let you choose how you approach. You can fight, or you can sneak, or you can do both. The game succeeds on this goal, as you can have a very satisfying time with the combat or the stealth, and you can do both. You can fight your way out of failing to sneak.
The morality system gives the game reactions to your actions, gives your choices an effect outside of the level you're currently on. It does encourage a specific play style but that is deliberate. The outsider is a malevolent force, who doesn't care for this world. He gives you these powers that come with a cost. Getting the good ending requires to resist the temptation. That's the point.
I started HRT about a year ago, so the experience is somewhat fresh in the mind. The main thing I would say is don't expect to feel much in just two weeks. The effects are cumulative, and take time to do much of anything.
It doesn't really feel different to be on estrogen. You can't actively feel your own hormone levels. The HRT made my brain feel much happier, but normal. Things just continued to feel normal, but a better normal. Even a new and good normal still feels like normal in the moment.
Since you're doing a short trial to see how your brain feels, take notes. Write a journal/diary, and have a close friend you talk to about how you're feeling. That perspective will help track mental changes.
Also have warm clothes close by. Women carry body heat in their cores at the expense of the extremities. HRT causes this in trans women too! You will probably feel colder than you expect, especially this time a year. Keep warm gloves, and cozy socks nearby.
Enjoy the estrogen! I love to hear you report back with your experience.