Goofs

Ed's fists are up (like he is getting ready to spar) then down in the next shot when the maze walls start appearing from the ground (1:40'27").

When Forge is running and complains about the chalice he is carrying, he is holding it with his right hand. But when he trips in the next shot, it is in his left hand.

In Dungeons and Dragons, Bards are basically a jack of all trades who straddle the line between classes. They have some rogue abilities, are competent fighters, and they have access to magic spells that can damage, heal, and even transform themselves into different animals. Edgin would have been much more useful than a planner and whacking people with his lute.

However, this is obviously scripted for laughs.

Obvious CGI of a potato flying to Forge's face or he would have seen it coming and (at least) started to blink.

When the character of Doric is introduced she uses the druid Wild Shape ability to transform from a horse to an owlbear and later changes animal shapes several times in a row, however the Druid has to change back to humanoid form before taking another animal form and owlbears are not standard animals but magical beasts which are not an eligible form for a druid to take.

When Doric was escaping her recon of the vault, one of the guards says "I can't grab her." Noone had seen her in human form, so how did he know she was female? The one time she was in human form she was inside a set of armor with a helmet.