Now, you're in Dionysus Park. Follow the hallways some (and the arrow of course) until you reach a semi-large room. Those red poofs are a new type of splicer called a Houdini. Eventually you'll get the large room and you'll have to fight the Houdini which combines teleporting (actually, it turns invisible and runs but it behaves like teleporting) with a ranged fire attack. If you use the Research Camera, the Splicer will turn gold (as they normally do) but you will also see this golden outline a little bit earlier than you see them when they reappear. You'll eventually find yourself in a hallway just before a large room. If you follow the hall around a corner you'll see a locked door on your right with a code pad. The code is 1080 and there's a Power to the People station in there.
Anyway, in the large room when you reach the door out, the Houdini splicer will attack you from behind and up on a platform. Kill it and proceed. The arrow will lead you up some stairs, past a bot shutdown station and then past a giant bear statue. Just before you head into the next room, you'll notice the red light of a security camera. Use the camera and the shutdown to get yourself some bots (I'd start running for the shutdown BEFORE I failed the hack) and then actually hack the camera and move on.
Keep following the arrow past another shutdown switch and in the room after the vita chamber are a couple of splicers you can get the drop on. I accidentally used a rocket spear on the lady by the tipped vending machine and she killed both for me. Kind of a waste of a rocket but it worked. Just off to the right of this room is a health station.
In the next room you'll see a merry-go-round. More importantly (to me anyway) there is a Gatherer's Garden which now carries the Security Command 2 plasmid. When you use this plasmid by holding the left trigger, it'll summon a security bot for you. Doing this twice will probably cost you an Eve Hypo but I think it's worth saving the trouble. Keep following the arrow into the next room where you'll find a few more leadhead splicers. If you're lucky, one drill dash will get rid of them.
The next room with splicers has a Power to the People station, amongst other conveniences. At the train station you'll find out what you're mission in Dionysus Park is. This one is pretty simple. Find and either rescue or harvest the three little sisters in the level. You don't even have to harvest corpses. Just off the big daddies and deal with the sisters (and of course the Big Sister afterwards).
So I'm not going to direct you from Sister to Sister, instead here's where to get them and how. And of course what to do with the corpses.
There's a Little Sister in Lamb's Garden to the north. If you're lucky, you may find two Big Daddies fighting. Either way, this should be a cake walk. Just toss a Security Command on the bouncer and lay into him with some armor-piercing rounds.
Also in this room is an Adam Corpse. This one is a little tough because of how much space there is but you can still set up traps at the front door and the base of the stairs. you can also use the trap spears to set traps across the room easily. Just remember to watch for enemies from the balcony up to your right.
The next corpse is in the room with the Merry-go-Round. This is a little bit of a pain because the room is mostly open, with a couple of raised platforms. Plant traps (there's an ammo vendor in the next room if you need some) at the doors and maybe use a mini-turret or two in this room. Use the Merry-go-round for some cover if you can. It does kind of block off a straight line of sight across the room. Good luck. Vent the sister when you're done.
There's another Little Sister in the J.Fischer Gallery. You should watch out for a Security Camera in the area. Hack it, make sure you have your bots and set up some traps if you'd like. If you go up the back of the room and up the stairs, there's a health station. In the room just behind that you'll find the Drill Specialist tonic, which only lets you use the Drill, camera, and hacker but significantly reduces the cost of your plasmids. When you're ready, hit him with a Security Command and start beating on him. Make sure you research!
There's an Adam corpse in this room. Make sure you littler the room with all sorts of traps even the back. Stairs are the best choke points. Maybe drop a mini-turret here. If you'd like you can run up the stairs to the health station and use this area to your advantage. Be careful that the health station doesn't get destroyed though. Remember that there's an ammo vendor in this room if you need any ammo.
Follow the sister into the next room for another corpse. Hopefully on your first trip through this room you didn't melt the ice blocking the door. Set up traps at the two (or three, depending on the ice) doors. Set up a mini-turret. Remember to have your bots with you.
The last Little Sister is in Triton Theater. Head on over and get ready. He may or may not already be engaged in a fight. Show up, set traps if you like, whip out Winter Blast and get ready.
When you've finally got your Little Sister, your first harvest will be just in front of the stage. This isn't too easy but it's not too hard either. Prepare your traps in front of the two doors leading into this room on the first floor and be careful for leadhead splicers on the first and second floor. Otherwise, tango with the Spiders.
The Second corpse is actually in the same room upstairs on the balcony. Head on up and set your traps in the door ways again. This time it's a lot easier because the only way for people to reach you from down stairs (unless you stand on the railing) is for a Spider Splicer to climb up but you'll hear them climbing well before they can attack you. Finish this and it's time for a Big Sister fight!
I recommend the Gallery Entrance for this fight. It has a health station, a vending machine, enough room to move around but not enough to lose the Sister, and plenty of objects to use for cover. The only downside is that traps aren't going to be very effective in this room. For this fight, just abuse Winter Blast (remember, vending machine) and your grenade launch or drill. She should be down in no time. Then just proceed to the train station. Beware of the extra splicers on the way.
When you get to the trainstation, you'll be presented with the option to kill Stanley Poole. If you'd like, you can do so (I wanted to). Really, the choice you make has little difference on your future actions but letting him live will contribute to the Savior achievement.
When you've made your choice and acted, make sure you've got everything you want and hop on the train. Flip the switch and say Bon Voyage.
