On page 2: "Well, the Elves' archery are really amazing."
Depending on what was actually said in the original Japanese, I guess one of the two following options would be better English:
1: "Well, the Elves' archery is really amazing."
2: "Well, the Elves' archers are really amazing."
One of the rare cases of errors (I think it is an error, English is not my native language, but the original translation sounds wrong for me). Your MTL reads more fluently than many translations done by big groups. You're good.