I played this game so many times, it's just so... peak. Here are some things I think that might help someone (correct me if wrong, or let me know if are better ways):
Art pack not working when you disable furry option in settings. (My art pack only started working after I enabled furry, and my current settings that work are: [settings tab] fullscreen: on, show sprites in dialogue: on, skip combat animation: on, use random portraits: on | [game tab] futa: on, furry: on, enable receiving sex options: on)
Find art pack and how to install it under the game download link. (I played the first 30 minutes of the game without an artpack, I am dumb it took me long to figure it out)
Best way to farm upgrade points is to buy slaves that have attribute points. I think, that's how I farmed 40+ points in like 15 minutes. The other way (that I prefer, but only works if you're strong and rich) is to go to "Marsh" (check map) and destroy bandit encampments and capture all BANDITS. If you have high reputation, you can ask the rescued people to join you (low chance to join you, but worth it)
If your slaves keep selling precious supply, go to mansion settings and see the number for supplies. Is it 10? Yeah, up that number. Supplies will sell only if its above that number.
I love mage, it is good if you know what you're doing. I was able to do 70-80 damage in the early game, and in the endgame I do ~140. Not having to care about their armor / protection is just so nice. Also, get the hammer weapon as soon as possible because it avoids armor, and get learn the aimed strike attack since it avoids protection. Mind reader is really handy since it shows you enemy stats in battle.
GET MARK SPELL FROM MAGE ORDER SHOP!! ITS A LIFE SAVER, ALSO GET GUIDANCE TO SAVE ON ENERGY!! You can cast these things when you're out of your mansion, bottom right of the screen, "control" -> spells menu
Tattoos are a must-have if you want beauty or magic affinity (more affinity = more magic damage). Can apply to yourself too if you're a mage looking for more affinity, which is awesome. 5 magic tattoos will give you +2 magic stat, and +3 beauty tattoos will give you 15 beauty. Two of my slaves work as exotic whores and bring ~500 by themselves which is more than good enough since skipping days is so easy.
In the early, sending slaves to work in market is good enough, just skip days. In the endgame, get rope and capture slaves of valuable races. Personally I just go to the Marsh for this. I go to the Marsh for everything, it's so good. One rope is 50, and the precious demon/lamia/slime/spider girls are worth like 400-500 easily. I think one of my demon girls sold for 1000+? weird how that works.
The milking quest is so annoying but you can make it bearable by using the potion that increases size. Majourous concoction I think. Find a taurus girl and apply it on her breasts until they're giant. Find material from the marsh (use mark to go back there easily, find mark at mage order spell shop) you'll have to use keys but it's faster than finding a girl with giant tits) Also lactation is annoying because how long pregnancies take. Use the lactation potion or do what I did - save scum going to slave's menu -> cast a spell -> cast mutation. Something goes wrong? revert back to the previous save. Make sure your alchemy room is on level 2/2 (mansion upgrades)
Can't go to amberguard? You probably aren't supposed to. Going there is unlocked by doing the story. I can't believe how much time I spent wandering near the elven groove, I am so dumb and silly.
Also, stress isn't really a problem... I think? I tried killing my slave by giving so much stress that the "slave is about to suffer from mental breakdown" pops up. I grouped up on the slave with 2 others, subdued, and did things that give stress. I did it without giving any rest or recovery, I did it for a week. The slave didn't die, so maybe the stress stat doesn't matter?
If you're low on mana crystal thing, make aphrodite brew. it lets you have sex with more than 3 people at once (group orgy), it gives you 100++ turns depending on slaves, and i end up earning about 500-1000 mana every session.
Lockpicks >>>> torches. Finding use for torches is too rare (unverifiable, just anecdote from my experience)
If you're low on gold, and have high reputation, you can get items by asking rescued people for material reward (they have a chance to give a random item or gold, this is so useful when starting out), sometimes they're enchanted too.
A good way to get enchanted weapons and stuff is to farm on marsh and open chests over and over again. Reason you wanna do this is because you're bored, or you want to gamble at umbra exchange.
Most of the time leveling up the slave from level 1 isn't worth it and takes too long, just go to an area where you find high level bandits and see if they have the stats you need. They will probably have leftover attribute points too, so that's fun. For me, I go to the... Marsh for that. How many times have I said Marsh lololol.
I wanna get high with this game and play it with someone else but...
lskdlfsdf i love slave maker games, especially when there are so many different things you can do. probably going to spend like 40 more hours on this game at least.