Level Up (A5E) Newbie subclass/archetype question

[Burnside]

I'm sorry if this has been addressed, but I wasn't able to find it with a quick search.

Currently building my first Level Up character. Just wanted to check whether the Level Up archetypes and subclass options are intended to replace the official 5E ones, or are just additional options?

 

[Morrus]

You can use O5E subclasses with A5E.

 

[Pedantic]

Generally they are both compatible. You can use O5e archetypes with classes in nearly all cases, excepting some slight changes (notably around fighters as A5e doesn't get action surge, so abilities keying off it need to be changed).