This is a guide to 'Inconceivable' hidden achievement with Mime.

To get the achievement you have to die to the Rubber Ducky. The rubber ducky is the first monster in the first dungeon in the game and does not appear anywhere else, so you can get the achievement only when you start a new game and before you finish your first quest.

It appears to be impossible to achieve this by using Chump (your first hero). I've seen a guide for doing it with the Apprentice (and it works), but I personally happened to do this with a Mime.

Since you cannot access Mime (or Apprentice) at the start of the game the only way to do this is to start the first quest with the chump, collect enough gold for the guild upgrades and then abandon the quest without completing it.

Turn 1:

• Ducky plays 'Headbutt' (**/-<3)
  
• I play 'Copycat' (*/clone next card (cloned stupidity))

Turn 2:

• Ducky plays 'Uhh..' (stupidity)
  
• I play 'Imaginary box' (shield/+* to next damage)

Turn 3:

• Ducky plays 'Anger' (*/-<3)
  
• I play 'Uhh..' (stupidity)

Turn 4:

• Ducky plays 'Headbutt' (**/-<3)
  
• I play 'Copycat' (*/clone next card)

Both die (ducky kills me and dies to self damage on the same turn).

There is of course some luck involved. Necessary conditions:

• You need 'Copycat' in your hand on Turn 1.
  
• Using 'Copycat' on Turn 1 should give you 'Uhh..' (stupidity) card.
  
• Ducky should get 'Headbutt' card on turn 4 (it doesn't matter if he gets it on Turn 1 or 3).

Provided the above play out as described you will die to ducky. If it doesn't, abandon the quest and try again. I was lucky on the third go.

To die as a Mime 'Talisman of the Crone' is not needed, but it increases the chances of having the right cards in your hand when you need them (see conditions above). So depending on whether you want the Talisman of the Crone or not you will need 50 gp or 100 gp investment.

In order to get the cash for guild upgrades just kill the ducky with your first chump, go and kill the rat on the right and then keep building dungeon to the right and use all the loot cards you get (don't put on any monsters and don't connect the dungeon to the other two rats). Once you think you may have collected enough gold, abandon the quest as your first chump and build the guild upgrades you need. Bear in mind that once you abandon quest you will also get extra gold for explored tiles, so keep building dungeon as you collect loot. Make sure not to kill 3rd monster though. After about 10-15 turns you may end up with 50gp (20+ turns for 100 gp).