I feel like it would be cool if there was some narrative during the resuscitation (like the parasite talking to you / taunting you) and if the target-hitting gameplay was a little more fast-paced. The timer could be a lot faster and maybe not give you time back when scoring a point, making it way more punishing to miss. Also the moving target could become faster with each hit, making it less frustrating (it's quite slow atm) and also getting across that sense of urgency better / incentivizing you to get help from the parasite.
Overall a cool idea with potential for more levels & complexity, I could see this as the intro sequence with a lot more gameplay and narrative being introduced over time.