Spent one morning running the game from the beginning since my demo save file didn't carry over properly.
Just finished stages 1 and 2 on hard mode. Those who played the Ci-En demo won't find too much difference, the notable addition being a new common enemy in the first two stages and a more fleshed out nipple guessing game which was in the DLsite demo. There's a couple of new skills like the double-edged one in the Ci-En demo.
The third stage is where the fun/hell begins. The new ailments he introduced a few posts back show up here in addition to the hypnosis mechanic. It's effectively mandatory to buy specific upgrades at base to counter the new mechanics (getting the gal outfit looks like a good idea as well because detection is much harder compared to stage 2).
Two galleries: the in-game animation gallery which unlocks as players clear the stages and the game-over gallery where the penetration sex scenes are. So far I've unlocked the DLsite demo scene (lose to common enemies on any route) and the first boss game-over scene. Developer makes it easier to unlock these since there's a base upgrade which permanently gives one suicide item in inventory to use when the appropriate stsge is reached.
Some of the bugs from the Ci-En demo are still in version 1.0. Game needs a few patches since some transitions are bugged.