Ah, I see! A mix of 2D and 3D assets can still work well, so I'm curious to see how the gameplay will feel with the new 3D environments.
Viewing post in The game is now going to be 3D Isometric comments
Hopefully the added vertical component makes for more interesting levels, I already started finding interesting ways to add secrets, things like jumping off a walkway onto a pipeline leading into a opening km the wall with ammo and weapons.
Movement should be pretty much the same as the 2D version, the isometric view pretty much handles the bullets the same way as 2D