Alicia does not appear at all until the last 15 seconds of this episode. By then two years have passed since she started her training. She even stayed locked up during her 15th birthday when her father said she could attend the academy again. I feel there's only one possible reason for this: she trained until she was level 100, maybe 100+.
Gill says it during the episode, that Alicia trains every day to narrow the gap between her and Liz as much as possible but that she doesn't believe she can surpass Liz. Gill is also surprised that Alicia didn't complete her training to level 90 sooner. Remember that Alicia stated in a previous episode that Liz and the prince are characters in the game that can surpass level 100 so I believe that to close the gap as much as possible she went straight for level 100 herself.
We also get further confirmation that Liz is brainwashing people. Students who would bully and antagonize Liz are now in love with Liz and badmouthing Alicia.
These two conquerable background characters whose names I TOTALLY remember are also starting to become relevant. Up to this point they hadn't deviated in behavior from the game. They also didn't seem to be under Liz' spell, which was a little odd. After all, other characters like Albert, Alan and Henry were under Liz's spell, even if Henry managed to break out of it. Makes me think that they were flying under the radar for unknown reasons.
Anyway, even with all this, not much has changed other than the fact it's now two years later. Speaking of characters I totally remember, who is this Mel character Duke talks with at the end of the episode?