According to the search results, Phantom Liberty is a DLC for Cyberpunk 2077 that takes place roughly halfway into the story, so players must be somewhat prepared. The recommended minimum level to start Phantom Liberty is 15, and players can quickly level up their character by doing contracts, side quests, and fighting various enemies. However, starting the expansion with a level 50 character can make it less challenging, and players can still level up their skills and unlock perks at level 50. If players want to start Phantom Liberty the best way, they should wait until at least level 25 to take on the DLC. Ultimately, Phantom Liberty is accessible to probably any level come its due point. Therefore, players can start the DLC at level 15, but it is recommended to wait until at least level 25 to take on the DLC.