Create or join a guild. When in a guild, you can access the Titan Battles by tapping the Guild widget and then tapping the Titan Fight tab to fight the current Titan, if available.

Titans are a special kind of monster. They have a formidable skill that deals a lot of damage (from 50% up to 100% of your maxHP) after their skill counter hits zero. They also have a new keyword, RELENTLESS, meaning that stunning does not prevent them from using their skill.

Stunning is not useless, however. All Titans have a regular attack that gets gradually stronger and that can be blocked by stunning. The increase is indicated by a number inside the buff icon (upward pointing arrow).

Furthermore, there is an endless amount of minions and cultists aiding the Titan. Dealing damage to these additional monsters does not hurt the Titan, nor count towards your contributed damage. However, killing the minions is not in vain, as Charge Potions can be found hiding behind the opposition. So, target your attacks wisely.

Do not expect to slay a Titan alone. It is a group effort. After a new Titan spawns, your guild has several hours to take it down. Every player starts with three attempts at damaging the Titan. You will also gain further attempts every 3 hours, up to a maximum of 3. Damage given to the Titan during all attempts by all members of your guild is added up. The Titan will escape if it was not slain before the time limit is reached. The remaining time (or the time to next Titan) is shown in the Titan Fight tab.

Titans come in different ranks. High-ranked Titans give better loot, but also are harder to slay. Victorious guilds will eventually meet higher ranked Titans while letting Titans escape means a weaker Titan next time.