Conclusion
Congratulations on finishing your SL1 playthrough. I hope your journey has taught you more about the game than during your regular playthrough(s). Other challenges await if you are so inclined. The possibilities are limited only by your imagination. Here are some examples:
A complete SL1 playthrough without taking damage from enemies and bosses.
An SL1 playthrough at NG+7. This requires you to complete the game at SL1 and get to NG+7.
SL1 NG+7 playthrough without taking damage from any boss.
https://www.youtube.com/playlist?list=PLC5au9T8EJP8NjQP8w4iMxoFRxQycWZ4B
A complete SL1 NG+7 playthrough without taking damage from enemies and bosses.
https://www.youtube.com/playlist?list=PLTaOHX8kEkD4lwINcVvMzM6JgZMAEujXR
World's First - The Dark Souls 3 Master Run Any% (SL1 No Upgrades/Infusions NG+7 Fresh Start No-Hit)