You can find the basic information for Jackal on Wikia here: Jackal - WARFRAME Wiki Of note is he is most vulnerable to Electricity so make sure you have the appropriate Mods on. I was duoing him yesterday with PeanutMayhem (who will hopefully be in TOG and the clan soon) trying to get Rhino Blueprints. In the process I've learnt a trick that isn't on Wikia so I thought I'd share it here in case it's not known. @roob had given me the following tips in a previous fight: Concentrate on one arm/leg to get him into a downed/vulnerable state. Stay away from melee range so he doesn't use his rockets (run slide, jump, dodge, and do whatever you can if they do go off). I'll take that one step further here. Your target should be the backwards facing joint of his left arm as it's a weak point and I was critting with a MK1-Paris for 271 damage a shot and bypassing his shields. He uses his right arm for his stomp so it's moving, which BTW you can jump over the line in the ring that emanates from the stomp to avoid it, you don't need to hind behind the pillars. Once he's down move in and melee his head since it tucks under his body in the downed state and becomes an easy target. The last time we took him down I was concentrating on the elbow weak point whilst Mayhem kept him busy, and once down Mayhem used his Excaliburs Radial Javelin (maxed with a 25% power upgrade) while I went for his head with melee. He didn't get back up! I've attached an image with the weak points highlighted for your convenience. TLDR version: Ensure you're modded/equipped to do Electricity > Puncture > Radiation damage. Target his Left Arms backward facing elbow (like on a dogs hind leg) to bring him down. Target his head with melee, or whatever weapon best does the above damage types, once he's downed.