itch.io

i mean you could go back to blue/green slime area and farm them as your too tough now for them if you got the heavy armour (that provides health boost and DEF stat boost

silver square in top right corner by the bookshelf opens the gate.

play the dice game in Wizards place (central camp/home

you need to collect the explosive powder sachel, in the crate, and then when you get sealed in the part with the crystals, put powder in barrel and activate the switch.

hope this helps.

p.s. the game also warns you to make many save points at the beginning, so to avoid full restart, make additional saves to pre-empt any possible mistakes. (you have 99 slots available for saves).