For this run I use the training room XP glitch which allows me to reach level 15 and talent into Avenger and Execution. I haven’t seen Execution used before, but it allows Sinjid to punch through both shield and HP on quite a few enemies. Human Gateway 1 & 2 are even defeated with a single Execution.
Instead of defeating the enemies chronologically, I jump between them in an optimized route where the monster portal is skipped entirely, and very little walking is required. Multiple enemies are also defeated each time a portal is entered to reduce the amount of cutscenes. Every time a portal is entered, I also use a glitch that ensures that Sinjid gets to attack twice before an enemy does. A similar glitch is applicable to enemies with longer death animation.
A special thanks to Rubicate for suggesting the use of an older Flash version for easier hot keys.