Ok, here's a little demo using Dega 1.14a.
http://rapidshare.com/files/107183552/Phantasy_Star__UE___V1.3___Brightstar_.mmv.html
As for how this will work, holding different directions while in motion has no effect for mob spawns. It's all frame based and based on previous path taken apparently. Now the question is how can I use that to get the mob spawns I need? I just started a second going (didn't do a full reset on first one), already at 167 rerecords and I can't figure out what frame is going to give me a single scorpion after only 1 or 2 steps out of protected space. (I had to take 4 for that 2nd one and I don't know if that'll be sufficient for this kind of a run. I just guessed on them I got after a lot of trial and error. This is my first foray into TAS runs, so I have no idea what I can do, if anything to avoid a run with millions of re-records.
As for the order of events planned,
1. Kill 2 Scorpions in 2 separate battles and buy Irn Swd - Completed
2. Kill 22 scorpions in 11 battles to get 300 meseta for Roadpass and Passport - In Process
3. Grab lac pot and Pick up Myau
4. Use Asuline on Odin
5. Pick up Compass
6. Talk to old geezer who hid the key.
7. Return to camineet for dungeon key
I would need to figure out next the best way to acquire 1000 meseta for CAKE. Most likely I'll return to Motavia and fight barbarians, or I may do that immediately after step 3 instead, depending on if the fight can be won or not. That should at least keep me busy for a while. After that.
8. visit Mayor and Run from bad dreams!
9. Get Noah, and 2000 meseta from chest.
I'll also need to figure out which way I'll want to go in terms of setting transers up. This may create some saved game data files so make sure to back up your own.