IKEA in general is piss easy to assemble except for leveling stuff where you'd need a laser and often times another person. Some of provided tools (the famous L 6mm hex key made of cheese) and hardware (nails) tend to be very poor... and sometimes it'd need a visit to buy extra hardware - e.g. low-profile head, non-counter sunk screws to attach to the wall.
Repairing furniture or addressing mistakes tend to be fixable by a mix of wood shavings/dust and epoxy in most cases.
So the assembly would depend on previous experience, available tools, and free space.