The most significant addition. Meld canisters appear on battle maps but self-destruct after a few turns. This forces players to abandon the "overwatch crawl" tactic and take risks. Meld is used to create:
At its core, Enemy Within takes the "easy to learn, impossible to master" foundation of the 2012 reboot and adds layers of complexity that force players out of their comfort zones. XCOM.Enemy.Within-RELOADED