Resident Evil 7 guide: How to beat Jack in the basement's Dissection Room chainsaw boss fight

Aside from Resident Evil 7's atmospheric horror gameplay, puzzle solving and tense exploration, it's also peppered with boss fights that are everything from mildly interactive events to fairly difficult duels to the death. The chainsaw fight in the morgue is one of the latter.

Once you finish your exploration of the Baker house's basement, you will have to do battle with a chainsaw-wielding madman. Warning: Spoilers ahead.

Resident Evil 7 is available now as an Xbox Play Anywhere title on Xbox One and Windows 10, and now has a sequel in the form of Resident Evil Village.

See at Windows Store (opens in new tab)

Battle to the death ... again

The first phase against Jack begins when you find the final dog-head piece needed to open the back door. He boots you into a square arena cell and begins swiping at you with a large ax. Before heading into this fight, you may want to consider backtracking to find health items if you're running low. A couple of screwups can cost you dearly in this fight.

Every game should have a chainsaw duel from now on. #ResidentEvil7— Jez (@JezCorden) 30 January 2017

There are lots of health items hidden around the basement, including herbs in plant pots and chemicals for crafting. There is also a crate and a healing item in the arena itself, in opposite corners.

  1. Preparation is important in this fight. Make sure you have a couple of healing items before going in.
  2. Jack's attack pattern, initially, is similar to the one he uses in the garage. The difference this time is you need to do damage.
  3. Kick the hanging corpses into Jack to stagger him, and then hit him in the face with your gun.

Resi Evil 7

Resi Evil 7 (Image credit: Capcom)
  1. Once you've done enough damage, he will go down on one knee and begin to mutate. After this, he will storm to one side of the arena and rip down part of the wall giving you access to the chainsaw.
  2. The chainsaw is awkward to use but very powerful. Holding down aim and attacking does a lunging attack, and simply attacking does a swiping attack. Blocking with the chainsaw is very effective. If you block at the last moment before being hit, Jack will stagger. If you overuse the chainsaw, the yellow light will turn red, and the chainsaw will stall. Press the reload button to rev the chainsaw back to life.

  1. Jack will come at you with some bizarre chainsaw scissors. Use a combination of blocking and kicking those hanging corpses to avoid and stagger him.
  2. Swipe at Jack when you have openings, using the center pillar to avoid Jack's attacks. Note: If you crouch while Jack lunges horizontally with the chainsaw shears, you will unlock the "Duck if you love life" achievement.

  1. Once you have done enough damage, Jack will go down on one knee and mutate again. Use the chainsaw's lunge attack to deal a huge amount of damage.
  2. Jack will mutate a few times like this. For me, it was three times on Normal difficulty. Rinse and repeat until Jack is defeated (again).
  3. Use the chainsaw on the door to exit ... and lament that you can't take it with you.

Paying homage to The Evil Dead, Resident Evil 7's chainsaw boss fight is one of the more grueling in the series, and it really exemplifies the studio's dedication to making the game's antagonists stand out. Stay tuned for our next guide, where we'll look at RE7's greenhouse battle, which is even more insane.

Jez Corden
Co-Managing Editor

Jez Corden a Managing Editor at Windows Central, focusing primarily on all things Xbox and gaming. Jez is known for breaking exclusive news and analysis as relates to the Microsoft ecosystem while being powered by caffeine. Follow on Twitter @JezCorden and listen to his Xbox Two podcast, all about, you guessed it, Xbox!

  • its hard cuz its glitched
  • It is? I've killed him three times and experienced no glitch.
  • i tried at least for an hour but no luck. Searched for the guide and my first reaction was WTF i did this xxx times and nothing happened. PC version
  • Are you blocking? I have a video of me doing the whole fight if you think that might help?
  • nope, his head was regenerating over and over again. I have restarted windows + game and the problem was gone. I dont know what happened. Maybe its an isolated problem?! :)
  • That's super weird! But I'm glad ti's fixed for you. Is that the UWP or Steam version of the game?
  • Jez, do you have any idea if this game (RE7) will play satisfactorily on a surface Pro 4? Are there any tweaks that can be done to make it work? I wanna get it on my xb1 but was looking forward to the play anywhere feature (with the sp4)
  • RE7 can be manipulated HEAVILY in terms of resolution, you can lower the settings very low to make it playable. I'll test this for you this week and get an article up.
  • Thanks, much appreciated.
  • So we (my hubby and I) are playing on normal difficulty on a PS4 and have made his head mutate 4x and still no "death. " Literally running around until the brick column in middle of room is destroyed and he won't die. Have tried about 40x now and rage quit twice! Hoping that 5 is the lucky number of mutations for us before Jack dies because we've got him to mutate 4x without death several times now and also 3x mutation a few times too. Such a bummer because I hate getting stuck in a repetitive spot like this!! Run up the stairs andbgrab Chen fluid, then across and down and grab gun powder. Combine and grab dog head.... Then fight Jack.. Over and over again which is turning into a grind. RE is tough with lack of saving whenever you want! Great game though and I will keep at it. Just wanted to let you know others are experiencing difficulty with Jack!
  • I have just read the first dlc is out 1 week after its release. And the 2nd dlc 2 weeks after release. Disgusting. That means it was all finished but cut from the game. Glad I didn't support this title. And I will NOT support Capcom again. That is downright terrible. And treating gamers like scum. The worst that any developer has ever done.
  • I have just read the first dlc is out 1 week after its release. And the 2nd dlc 2 weeks after release. Disgusting. That means it was all finished but cut from the game. Glad I didn't support this title. And I will NOT support Capcom again. That is downright terrible. And treating gamers like scum. The worst that any developer has ever done.
  • I bought a cheeseburger yesterday. The restaurant made onion rings and chips THE SAME DAY. I demand to be compensated for the extra food I did not receive or will boycott the restaurant, even though its product is outstanding.
  • lol
  • +1
  • So your saying its a good thing a game gets developed. Then instead of including all the game for £50, they cut parts off that are finished and charge another £15 for each dlc. So the full game in less than 2WEEKS after release costs you £100+. I don't mind dlc if it is extra content worked on after the game came out. But to blatantly have finished it but cut it from the game to make more money is crazy. You might as well drop your pants and say abuse more I like it.