I'm a PUBG and CS:GO player, and I'm pretty good at them, with a high K/D ratio. Even so, it still took me quite a while to get past the boxing coach, which is already the limit for most players. Not to mention, during the fight, the progress bar intentionally lags, and the images glow, which tortures your eyes. One mistake resets the progress bar, but the speed just keeps increasing. This is clearly the creator deliberately trying to annoy players; it's pure malice.