I found several cool and amazing things. (rot13 cipher)
yvxr gur Lhev Ebbz, n frrzvatyl hfryrff zbhfrtvey naq zbhfr, gur puvpxra, pngtvey cbjref, n fanxr tnzr gung tnir zr $1, n sehvg jvmneq jub gbyq zr n fcrpvny cnffjbeq frperg (Punatr gur 4gu flzoby gb n fuvryq gb trg gur orfg fuvryq, naq punatr vg gb n yvzr sbe gur orfg fjbeq)
V qba'g xabj vs nalguvat unccraf vs gur terra ohaal rngf gur terngrfg fj
V sbhaq bhg gur qbt tvey jnf znaqngbel sbe cebterffvba. V sbhaq bhg cvt tnzoyvat vf njrfbzr naq hfrq vg gb fcrrqeha (v qvqag erpbeq zl gvzr ng nyy). V sbhaq bhg gur zbafgre pbqr vf ZBBA-ong,fxhyy,zhfu FGNE-Xavtug,fyvzr FHA-sver,zrbjebpx,unecl
V qbag xabj jung unccraf vs lbh yrg gur terra ohaal rng gur orfg fjbeq. Nyfb zl cnffjbeq vf zbhfr cvt zryba yvzr fha fha
Though i wasn't able to find all of final area's hidden rooms.