Long ways to go.
There is effort shown here, but if you're wanting to keep people interested in a stickman flash you have to do a lot better. Even some 6 years ago we had xiao xiao to wow us and things have gotten far more impressive since then. My advice is watch a few, get some ideas to improve the choreography and speed up the action a bit.
It has an alright plot, with alright animation...my only criticism is that it needed looked over a couple times. Artifact was spelled wrong, and a couple little other things
Blurry as hell.
Your text is painful to read and what would have been decent art is really ruined by this. Fix it.
not bad but
Not bad, but don't rush your work! The entire thing was too short, and it would be much better if you released the entire work as one coherent submission. Flesh things out. Otherwise, it shows a lot of potential.