For Victories and Fatalities, go to options and set it to 1 round. Plug in a second controller and play 2 player versus. At the loading screen input the following kombat kode 044-440 for sans power. With 1 punch it goes to FINISH HIM, making the 100 victories and finishers go by way fast. The biggest pain is having to input the code every match. Find the easiest fatality/stage fate/babality to do to make life simpler.
For X-Rays, go to options and set the rounds to 3. This time play 2 player tag match. At the loading screen input the following kombat kode 466-466 for unlimited super meter. This allows you to get 6-8 X-Rays per round, 18-24 per match. You'll have 150 in no time. Again having to input the code every match is a pain, but that's why you do 3 rounds instead of 2, so you have to do it less often.
For the 24 hours of play time, go to practice -> tag team practice. Choose 2 characters and leave your console on while you go to sleep/work/out. *Be sure your controller is wired or is connected via a charging device. If the controller turns off, practice mode will go to the pause menu and not count the time.
The 10,000 pints of blood spilled will be acquired as you work toward mastering the other statistical aspects.
Hope this helps! Have fun! (ha)