>>724667761
That would be a good early project since 2.5D is easier to manage than full 3D. However, you'd still need a 3D engine (or code your own, but you're not doing that). That means Unity or Unreal would probably be your best bets.
You'd basically make a 3D setting, have fixed camera objects to make it look 2.5D, and make a path with limited navigation/collision so players and enemies can only move on the path you make instead of the whole 3D environment.