An Assassin’s Creed streamer has managed to complete all 12 main games without taking any damage in the process. Starting with the original Assassin’s Creed and working your way up to Assassin’s Creed Valhalla, what makes the challenge even more impressive is that Hayete Bahadori finished several of the games on the highest difficulty setting available.

As Kotaku saw, Bahadori also made sure that all level objectives were completed to claim 100% sync every game. No reloads, restarts, or crashes were used to mess with the system, and from Origins onward, every game had its difficulty setting turned up to the max. For those times when taking damage was unavoidable and part of the game, Bahadori would make notes of such instances in his YouTube descriptions.

The key to Bahadori’s success was preparing for and learning useful techniques from speedruns in these games to minimize risk. Practicing for each run was around 100 hours per game, according to Bahadori, though the titanic size of Assassin’s Creed Valhalla increased that training to around 800 hours. Black Flag’s luck-based challenges required around 250 hours of investment before performing properly.

The challenge kicked off on October 16 last year, and with all major Assassin’s Creed games overdue, he’ll be attempting a no-damage run for God of War next. Back in the merry lands of Assassin’s Creed Valhalla, Title Update 1.5.1 released in April, adding a new Mastery Challenges pack.

If you’re looking to jump into older Assassin’s Creed games and have an Xbox, the good news is that Microsoft has extended its deal with Ubisoft to bring more of the publisher’s library to Game Pass. That will include the addition of Assassin’s Creed Origins and For Honor. Or if you prefer to make some tabletop games, there’s always Assassin’s Creed Valhalla-inspired DLC for Uno.