Professor Mayhem achievement in Homefront: The Revolution

Professor Mayhem

Purchase 4 different active skills across any number of Resistance Mode characters.

Professor Mayhem0
4 guidesOnline Game ModeSingle PlayerCooperativeLevelShopBuggy +

How to unlock the Professor Mayhem achievement

  • Itzz Sh0wt1m3Itzz Sh0wt1m31,846,997
    12 Dec 2016 13 Dec 2016 13 Dec 2016
    25 1 11
    The other solutions perfectly give away that there is a positive glitch, though I didn't find those guides complete enough, which resulted in me and my boosting partner Healtti having to do 2 classes instead of just 1.

    The achievement requires you to purchase 4 different active skills across 4 different characters. Active skills are the tier 4 skills. Each class (Brawn, brain, fighter and survivor) has one active skill which you can unlock. You can only spend 20 DNA points on one character. Tier 1 skills are worth 1 DNA, tier 2 are worth 2 DNA, and so on. In order to purchase tier 2 skills, you will need to have purchased at least 1 tier 1 skill. The same goes for Tier 3 and tier 4 skills, you need to have purchased at least 1 skill from the tier below that. Besides, you will need to have spend 10 DNA points on skills for the same class, in order to unlock the ability to purchase the tier 4 skill. Last but not least, you need experience points.
    Tier 1 skills cost 1500, tier 2 cost 2250, tier 3 cost 3500 and tier 4 cost 5000.

    The positive glitch is that, if you have both:
    - created 4 different characters, one with a brawn skill as background skill, one brain, one fighter and one survivor
    - purchased the active skill for the survivor
    it'll unlock the achievement.

    This basically decreases the time needed for this achievement by 75%. So, to start off, create 4 different characters, each with a background skill from a different class. You will be using the character with the background skill in Survivor. You will need to purchase at least one tier 2 and one tier 3 skill. This will cost 3500+2250=5750. This will get you to 6 DNA points. Purchase two more tier 2 skills to reach 10 DNA points. (10250 xp). Finally, you will need 5000 xp to purchase the tier 4 skill (15250 xp). Be sure to only purchase survivor skills. Besides, remember that you can only have 20 DNA points for one character. If you have a character with 6 or more DNA points in different classes, start using a new one.

    We would average about 1200-1300 xp (with small xp boosters) in about 6-7 minutes (including loading times) by using the boosting method below. This means, that you can get this achievement in about 12-14 games, and in under 2 hours.

    Boosting method
    The boosting method we used was replaying the level "enemy at the gates" on easy. This is in my opinion the easiest and fastest level. At the start of the mission, you will need to hack 2 computers at 2 locations. We would always split up. Use the hacking charges or explosives on vehicles (or shoot the yellow bar at the back of the vehicle). Only kill enemies and vehicles that you really need to kill in order to be able to hack the computers. More kills doesn't really give you a lot more XP.

    Once both computers in locations are hacked, start running east. You will run underneath a highway. If you go to far to the east, it'll say "go back to the mission". You can move further North or South, depending on what location you came from. The team leader will say something like "I'm sending you the new location, where you can get a bike". Once she is almost finished with this monologue, you can leave the mission area and head for the bike stash. Get on the bikes and race straight for the location of the 10 elite KPA soldiers. There, start killing those elite soldiers, along with any other dudes that attack you. Once there are just 2-3 elites left, let one player leave for the extraction area (you will need to have played the mission at least once to know the location). Once the other player(s) have killed the remaining elites, let them down themselves. The player at the extraction area enters the final room and the mission is finished. We were able to finish this mission in about 5 minutes, with our best time being something like 4 minutes and thirty seconds.

    I've used the first battle rifle all the time, with the first secondary weapon (pistol). I had it unlocked from the start. Spend your cash on either attachment upgrades (1000 dollar) ( to try and get Grip, red dot and muzzle brake attachments) or on consumable upgrades (500 dollar). I would advise to spend most of your cash on the latter. You will replenish your hacking charges (which I used a lot), you get weapon parts (to upgrade your weapons with) and you get xp boosts (use these whenever you have them).

    I had a lot of progress on this achievement by doing this mission:
    Homefront: The RevolutionSecret AchievementThe Secret Achievement achievement in Homefront: The Revolution worth 57 pointsContinue playing to unlock this secret achievement

    This mission is in my opinion also best suited to get:
    Homefront: The RevolutionPeace in our timeThe Peace in our time achievement in Homefront: The Revolution worth 69 pointsSuccessfully complete a Resistance Mode mission on normal difficulty.

    Homefront: The RevolutionPeace your pantsThe Peace your pants achievement in Homefront: The Revolution worth 155 pointsSuccessfully complete a Resistance Mode mission on hard difficulty.

    Depending on the skill of your teammates, you might get this achievement (otherwise, just boost it at a vehicle, or keep jumping from a rooftop):
    Homefront: The RevolutionEveryone fights, no one quitsThe Everyone fights, no one quits achievement in Homefront: The Revolution worth 39 pointsRevive 10 downed teammates over any number of Resistance Mode missions.

    You will definitely get the following achievements, without specifically going for these, in 3-4 games:
    Homefront: The RevolutionE Pluribus UnumThe E Pluribus Unum achievement in Homefront: The Revolution worth 77 pointsEarn 20 team citations.

    Homefront: The RevolutionMinutemanThe Minuteman achievement in Homefront: The Revolution worth 65 pointsEarn 10 mission citations.

    Homefront: The RevolutionSon of LibertyThe Son of Liberty achievement in Homefront: The Revolution worth 32 pointsEarn 20 individual citations.

    After you've gotten your achievement, play one more game with your character. Then hold cn_right to throw down some supplies. Let one of your teammates pick those up for your final achievement in resistance mode.
    Homefront: The RevolutionPractical MayhemThe Practical Mayhem achievement in Homefront: The Revolution worth 70 pointsDeploy an active skill in a mission, and have at least one other player use the results.

    Guide not helping? View 3 more guides for this achievement.

    Showing most recent comments. View all comments.
    Leo AscendentWorked perfectly. If anyone needs help, shoot me a message, I can play a few games every now and then (maxed rank, not too terrible at the game).
    Posted by Leo Ascendent on 16 Aug 18 at 15:36
    Cellar AtticThis still works as of July 15, 2020. This solution saved me a lot of time, and I read it just before I made a HUGE mistake regarding the allocation of skill points.
    Posted by Cellar Attic on 15 Jul 20 at 14:06
    LERISBILLSALOVEthumbs up on this, was tier 3 on a brawn character when I read this and I'm glad I read it before going any further. Immediately stopped playing with this character and created a survivor. Achievement popped when I purchased the active skill for the survivor. Thanks a lot for the heads up! toast smile
    Posted by LERISBILLSALOVE on 16 Jul at 16:41
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  • HateMe4141HateMe41411,618,446
    14 Jul 2016 14 Jul 2016
    11 2 4
    The above solution works but to clarify:

    As of right now, this achievement is glitched in your favor. You only need tier 4 in the survivor tree to unlock this achievement.

    Can confirm this works as its the only class i used.
    Showing most recent comments. View all comments.
    Itzz Sh0wt1m3Good to add. I was doing the brawn and was wondering why it didn't pop for my buddy. Could now use some of the unspent experience on upgrading the survivor.
    Posted by Itzz Sh0wt1m3 on 08 Dec 16 at 22:31
    hudd2000Worked for me doing this.
    Posted by hudd2000 on 17 Feb 17 at 02:26
    matdanYep still works, saved me some time thanks is no small thing I can say.
    Posted by matdan on 26 Apr 17 at 09:15
  • PeppoPigBRPeppoPigBR247,356
    17 Aug 2017 17 Aug 2017
    5 0 2
    for this achieviment you need create only a survivor character, the achievement unlocks soon after you buy the last skill on tier 4 in the survivor tree, i confirm that.
    Showing both comments.
    BobbyAshConfirmed. I created 4 characters, all different classes. Only used survivor, upgraded to tier 4, achievement popped.
    Posted by BobbyAsh on 20 Aug 17 at 18:57
    TouchingVerminConfirmed this still works!
    Posted by TouchingVermin on 24 Aug 17 at 22:43
  • The SCHWARTZ 00The SCHWARTZ 001,013,689
    20 May 2016 19 May 2016 22 May 2016
    7 3 18
    What this means is you must purchase a different Tier 4 skill (aka "active skill") on four separate occasions. Active skills are the very last one you can buy in each of the four skill trees (Brains, Brawn, etc). Youll likely have to create 4 different characters and get to Tier 4 once with each, as once you reach max level with a character, XP no longer builds up.

    Edit: this may be glitched, in a good way. I created 4 characters but got to Tier 4 with only two of them and the achievement unlocked.
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