1) Run installation and use this serial 3333-4444-1111-2222-ce13
2) Install updates in order ( it will be faster to download the updates from here http://cohpatch.relic.com/ )
I. EN_2500_2501_Patch
II. EN_2501_2502_Patch
III. EN_2502_2600_Patch
IV. EN_2600_2601_Patch
V. EN_2601_2602_Patch
3) The other campaigns should already be activated. If not, click on one of the padlocks and enter the key 0000-0000-0000-0000-0000. This should permanently unlock all of them!
If you need the game in another language just grab the multilanguage patch from
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