Dungeons 2

Story related, can't be missed.

To get this, you need to upgrade your dungeon via the Dungeon Portal (the large shrine where you summon minions) and to upgrade, you need to accumulate Evil by attacking the Overworld and conquering the land. Once you beat certain enemies and destroy bases, the land changes from nice and green to evil and red. This act will accumulate Evil. Unfortunately there doesn't seem to be any way to check how much Evil has been accumulated but you can upgrade your Dungeon from Level 1 to 3. Your Dungeon level also gates your upgrades so the higher the Dungeon level, the more upgrades you can research.

Technically this trophy is unmissable because at one point in the campaign, you need to upgrade to Level 3 to complete an objective, otherwise you can't progress.