The choice of breed is one of the first decisions that needs to be made. A breed cannot be changed so choose carefully. An engineer needs high nano skills in MM, MC and TS mainly to be able to get more powerful robots. Therefore you should not play an Atrox, since their Intelligence and nano skills are poor. Intelligence is important because it is a 80% base ability of many nano skills. A Nanomage works well for an engineer; they have better nano skills and intelligence. An Opifex or Solitus will also work, their intelligence and nano skills are average.
One of the engineer's specialties, late game there are a few extremely good options for grenade, lower levels not so much. The exception to this rule is the Red Line Grenade Launcher, a rare and powerful weapon which can be used by engineers as low as levels 10-15.
Useless for the engineer unless you want to use an OT 12.
A commonly required tradeskill, easy to buff, raise it as you need more of it.
A fairly commonly required tradeskill, easy to buff, but only raise it when you need it.
A tradeskill that is required occasionally, especially in the creation of nano crystals and Shadowland pocket bosses. Raise as needed.
A commonly required tradeskill, easy to buff, raise this as you need it.
Used to make monster parts into blood plasma, a lucrative tool for engineers of any level. Hard to buff, but worth raising as you need it.
Very useful for making implants, max this out at lower levels, as you will need to make your own implants. Once you can make QL 200 implants, raise it as you need it.
Max this out, needed for so many things...
A commonly required tradeskill, unfortunately it's one we are very bad at. Only raise this at the highest levels (215+)
Used in a lot of tradeskills, hard to get high due to lack of buffs. Raise as needed.
Raise this to 1000 if you are a tradeskiller, basically this skill is solely for the use of Tutoring Devices. Early in AO's history, the devices were intended to be used on others, this has never been implemented.
Don't bother with any vehicle skills except for vehicle air. And you needn't raise that too high either.
Either raise this only to 125 (needed to get all map upgrades except "side"), or do not raise this *at all*. By level 50ish, you can make (or have made) and then use QL90-110ish implants for this skill. Get the implants, install all of the map upgrades, and take the implants back out; the map upgrades still work fine, you only need the skill to install them.