Use a Mek have like 50 Element on it. So you can fly and dodge attacks. Be careful the Titan can one shot or do a ton of damage to your mek. The way to tame it is you use a M.S.C.M. On your Mek with around 50 Cannon Shells. Make sure you are accurate and hit the corruption. Another Tip you can farm the Desert or This one (because they are the easiest to kill) To get Cannon Shells instead of crafting them.

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