Board Thread:Questions and Answers/@comment-104.225.161.48-20190926172144/@comment-32329805-20191005045511

I'd personally use a Perma-Spike (X-X-5 Spike Factory, preferable 0-2-5), buffed by an Alchemist (2+-X-X). It should take care of the DDTs, though you will need to be careful that the Perma-Spike doesn't end up soaking up too much damage from the other MOAB-Class bloons, especially on Round 98, as immediately after on round 99, there's a rush of fortified DDTs.