ohhh yeah the savato. very difficult one. first you have to cut the webs one by one. after you cut a web piece your scalpel will melt and youll have to wait for your nurse to give you a new one. anytime it makes a new web piece immediately pull out your laser and blast the tiny bugs before they scramble together to make a large blue guilt. (it isnt always possible to stop them but if you kill more it will have a lower chance of happening. once you remove the web it will wander aimlessly doing damage now and then and releasing tiny guilt. once its wandering aimlessly blast it with the laser untill its fiery layer is gone. it will proceed to dance around to escape your attacks, use your scalpel. something will happen and youll get a new serum. repeat the web process then the laser process then after you stab it with the scalpel it should move slowly and wounded untill you inject the serum. once you do all hell breaks loose. it will go straight to the middle of the heart and create a large number of cuts. the guy should automatically engage the healing touch.

heres the part most people mess up.
after he engages the healing touch automatically. you must do it too. it will completely stop time for you to insert the serum. enjooooooooy.