Step one: Build slime pit
Step two: check crit damage. (50% With ascension)
Step three: Upgrade it one, check again. (62.5% With ascension)
Step Four: Upgrade it once again, Check again. (75% with ascension)
Step 5: Upgrade it a final time to check the crit damage again. (Should be back to 50% with ascension)
Expected Results: Didn't expect the first 2 upgrade levels to give 12.5% increased crit dmg, and then the 3rd and 4th upgrades to put it back to normal.
Tier 4 Slime pit drops the crit damage % for me too. Its not really worth upgrading all the way if it crits for less at tier 4 and 5