XCOM: Enemy Unknown

XCOM: Enemy Unknown

55 Achievements

1,100

82-103h

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The Hardest Road

The Hardest Road

Advance one of your soldiers to Colonel rank.

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How to unlock the The Hardest Road achievement in XCOM: Enemy Unknown - Definitive Guide

There's no easy way to do this one, just keep sending your soldiers on missions while getting a couple of kills. As long as they don't die, you'll eventually get some of your soldiers enough xp to reach this rank. As Deleriousdrew commented, you can also purchase the 25% xp boost from the officer training.
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11 Oct 2012 14:00

2 Comments
also you can use officer school to buy an exp boost
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By DeliriousDrew on 11 Oct 2012 18:54
Probably the easiest way to do it is to get a sniper and give them the "Squad Sight" perk when they hit corporal rank. Then you just leave your sniper safely up the back somewhere and let them pick off the aliens whenever they show up.
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By Hirsute Dave on 28 Dec 2012 15:34

Colonel is the highest rank in the game and is achieved by earning XP for killing aliens. Take note to not let your higher ranked soldiers die because they need to progress a fair way to reach Colonel. If you want to reach this level faster, ensure that your highest rank soldiers deal the finishing blow to aliens so that they earn the XP. A lower rank can weaken them if necessary.

You can also build an Officer Training School once you reach the rank of Sergeant which grants a bonus of +25% XP from kills. This upgrade only costs §125 and is one of the best upgrades to buy early in the game, so it is highly recommended that you purchase it. Below is a list of the ranks in order.

  • Squaddie
  • Corporal
  • Sergeant
  • Lieutenant
  • Captain
  • Major
  • Colonel
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Many people say that a sniper is the easiest to get, since they don’t have to get into trouble. I got it for a stormtrooper. Just take care and upgrade your character and sooner or later he will reach this rank
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13 Jun 2013 09:07

Soldiers gain experience for killing aliens. It is very easy to bring one fighter to the level of colonel (if you play on easy or normal difficulty level). Almost a plot trophy, but don’t forget to buy an upgrade to increase experience in the barracks, more precisely in the officer’s school (at the impossible difficulty level you must first build it)
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03 Nov 2012 23:54