Great game, although after completing True Ending at lv45 with checking pretty much each <3 event I managed to unlock only fraction of gallery and H-skill levels were mostly at Lv1/2. Some events I don't even have idea where to find. Started second run for max karma/lewdness.
Combat after first few chapters became too easy, and just swimming in upgrade materials. Maybe they should've ramped HP a bit to make better use of H-skills for stuns or random "stronger" monster encounters did not get mp depletion of after just one H-skill use or not be instantly demolished by one round of multi-target skills.
Tip: always check each city for quests/talks and costume shop at start of chapter.
Seeing H-event indicators for characters not yet in team was a bit weird, also constantly changing outfit for events instead of just "Can trigger event when owning costume X" was a bit annoying.
I've completed pretty much all quests with exception of Q034 and Q071 which I couldn't trigger.
Few little issues found - untranslated prompt prior to last boss room and couple of panels in h-events.
Did crash once during Lisa h-event at Small Village, but second attempt was fine. Used Locale_Emulator to run game.