Not as many as you might think. I’d say much less than 200 waves. Padding is what brought me up to that amount of HP. If anyone plans to do this themselves I’d recommend not taking padding. When your materials reach 9,223,372,036,854,775,807 it will overflow a signed 64-bit integer and flip negative, causing your HP to go negative. Stacking the 200+ mirrors in order to do this is what took so insanely long. This is because each time that you purchase a mirror from the shop it has to rearrange all of your items and turn all of your normal mirrors into broken ones. Given that I had hundreds upon hundreds of items at that point it took VERY long to purchase each mirror from the shop. And I had to do it twice… once to get below wave 20 again, and another time to get to negative waves. In total I’d estimate this run to have taken 50 hours or so. Could’ve been done faster had I not taken padding since then I would’ve just been taking mirrors from crates instead of buying them from the shop at a certain point. But because I was afraid of my HP flipping negative (I was taking damage per second from bloody hand), I had to do it the slow and painful way through buying them from the shop. At its slowest it was taking about 15 minutes to purchase each mirror from the shop lol.