E3M3: teleporter (linedef 1039) doesn't work, because there is no teleport destination thing in the landing sector. There is no way to access secret sector 139. Thanks a lot it is fixed now.
E3M4: red door isn't openable from the exit side. Thanks a lot, it is fixed now.
E3M5: misaligned flesh textures inside sector 166. The west part of lava pit (sector 198) is inescapable. It's intentional (but not for the misaligned flesh textures)
E3M8: sector 25 should be tagged 5.It's intentional
"E4M1: shouldn't be sector 12 secret?" Not necessarily .
"E4M5: two door (sectors 38 and 39) are not closed all the way down in their initial state. It is visible if you stand in sector 11." Not a problem for me.
"E4M7: shouldn't be sector 81 secret?" Not necessarily.
And i fixed some problems with the secrets levels . And with sectors who were too high.
I wait a little time for upload a new release on idgames :) Thanks for playing guys !