Some tips about the Bloodstalker:

1-If you are riding your tamed bloodstalker but it is low on health, it will start sucking your blood until you die. I think putting blood packs/raw meat in its inventory will solve the problem.

2-They can float on water, if you want it to submerge fully underwater, press the X key (if you have not changed the key settings) on your keyboard but i am not sure about the other devices. They can also swim very fast.

3-They can pull certain creatures that are small with their strings, they can also climb, and they can be a great tame once you know how to travel with them.

4-If you need to feed baby bloodstalkers, you can use raw meat or blood packs but not cooked meat because they wont eat it and eventually starve, put the food in its inventory, and not the trough because if you put food in the trough and go out of render distance, they wont be able to eat and will also starve to death.

Thanks for reading this, i hope it helped!

-Pablo

To raise effectiveness you have to feed it around 5 tames. Parasaur, Phioma, mosschop, or anything is can grab that can take a few hits before the stalker grabs it. Levels don't really matter except for amount of health the tame has. On Gen2 I picked with Void Wyrm and put in a trap. I used double compartment trap. One for tames and other for the stalker. Start taming process using blood packs, feed tames, and then finish taming with blood packs.

It's pretty easy to tame a bloodstalker. You just need a blood transitions set and suck out 400-700 blood packs, but be careful if you do that, you'll get 20 damage per pack. It's worth keeping some condensing salt in your inventory It's about 50 minutes then it's also good to take 10 parachutes with you because the bloodstalker could throw you down if you If you have all this you have to go to the moor in a place with giants and big trees hanging on the branches of the trees then sometimes the bloodstalkers when you see them they have already seen you now they will pull you towards them sometimes they will let you go for that the parachutes it can take a second for them to grab you again then once they have you they will automatically suck the blood packs in your inventory and you will automatically tame them

This creature has a good utility to survivors: it sees creatures even in BLIZZARDS!! Which means a ferox is easy to find in a blizzard but remember; lock yourself on the ferox by walking right at it after getting off the bloodstalker, but always bring a grapple gun and a grappling hook but use it after feeding element but a second before looking at you in it’s giant, mutated form. [Grapple to anywhere like a “upper land” you see first, get some extra grappling hooks for practice hooking, but know how much hooks you need and find out how high it can grapple]

Normal bloodpack method won’t give you full taming effectiveness, if you want full, you will need to tame a couple moschopses put them on passive, wear ghillie and whistle follow until your moschops is in the range of the bloodstalker.

Then it will web and kill your moschops and make its taming effectiveness grow, after it has killed a few, the taming eff. should be full, after that, continue with the bloodpack method.