That was actually an impressive work for a first time, well done!!
Abou the chapter itself it kinda irks me how even veteran lv 4s rely on Bell (new lv 2) to beat the boss. I know that Bell is the MC but come on, dont up the plot armor up to eleven.
Putting Bell on a hard situation where you know that he will win because it has a minimun chance and has plot armor is one thing, another is beating a boss that multiple lv 4 have a hard time against as a recently leveled lv 2 where he should have need as minimun to be lv 3 plus plot armor to even have a chance