Aren't they a way too strong? I mean, AoE heal every 10 seconds, 300+ of single heal on eachothers when they are 2, possibility to ress... They are a madness with all the robots spamming AoE attacks and deploying bombs on the ground. What the hell. I usually do T3 alone or just in a party of 2, and it is almost impossible to complete every third arena of Arena Depths because of those small devils...
Healing Gremlins at Tier 3 arenas...
It'll be slow but they can be dealt with. First objective is to get them onto corners... if possible one on one corner and another at the other. That way they won't heal/rez each other. If however they do end up together in one corner, try to get the bots or whatever monsters that are following you to have a good amount of gap so that you can kill one of them quickly and then deal with the other on the second turn.
The only issue that might makes things much slower is if they made their bubble or area heal which you'll have to wait until those disappear since alone; you can't damage them enough.
Menders are never really a problem.
Even with mass Robos/Darkfang Scorcher (I had a T3 arena completely devoid of any Robos, mostly gremlins with a few constructs and jellies) they are no real problem.
I usually just run around the arena, placing bombs behind me, while waiting until all robots are gone.
Okay I'll try thank you all for the replies
Tier 3 arenas are supposed to be hard.
They are too easy imo for the rewards they give.
At worst you should be able to run around the edge of the arena turning back to drop a charged attack every few seconds. You'll still kill the robots faster than the gremlins heal them.
Or you can just wait til everyone is healed. The gremlins will usually wander down to a corner by themselves where you should be able to take them out in short order.