Havent played in a little while, so im a little rusty on the specifics of what to do early game and so on, but i can give you some general advice.
You need to use your mobility, which TW has a lot of. I like to max dimensional step as early as possible, it takes no time to cast, and is just awesome. Additionally, temporal wake is also decent, and used together with dimensional step can get you out of range of anything. On top of that, you need invigorate to refresh your abilities faster, which is just really good.
Swap can be useful early game, and can save your life if you are facing a difficult single enemy, it can also be useful if you are about to be stuck between an enemy and a wall (usually in corridors).
Damage smearing is really good and i dont think you will stand much of a chance without it. Time skip is also really good, because it can buy you some time, or turn a 2v1 intro an 1v1.
I also think spacetime mastery is worth it, even if you only use dimensional step, since it doubles how often you can use it. If you use both dimensional step, temporal wake, invigorate, and spacetime mastery, you will only ever need to fear burst damage (you have damage smearing to help you there), and getting too high on paradox (dont forget to use static history).
Is there anything specific you are having problems with? when do you usually die?