Do not disable upgrades! They reduce your score by so little that they are definitely saving enough time to make up for it. 30 upgrades cost 1 second, and they will definitely save more than 1 second during combat. Also, defense candies are better than attack candies.
Robbers are Numbers are both relatively manageable. In Robbers you can just open chests that might be the robber and if you lose 100g it's not a big deal, and might even give critical information to solve the puzzle. At level 1 you can probably afford the financial setbacks. Really, you shouldn't worry about robbers. With Numbers the solution is almost always unique, so once you find one you can usually just send it, but at the same time in my numbers run I had way more time to work with than I expected since there were a lot of chests.
The way scoring works is as follows: you start with 2000 points. You gain 60 points per floor cleared. A successful dungeon will be 31 floors cleared for 1860 points, so a successful run will have a baseline of 3860 points. You lose 3 points per second and gain 80 points per chest opened. Also every 10 upgrades you have costs 1 point, meaning 30 upgrades will cost you 1 second. In equation form it looks like this:
S = 3860 + 80C - 3T - 0.1U
My robbers run had 65 chests, so my score started at 3860 + 80*65 = 3860 + 5200 = 9060. With my 22 upgrades my score is now 9058. Since I want 7k I have 2058 score to work with, so 2058/3 = 686 seconds or 11 minutes 26 seconds to work with.
My numbers run had 95 chests, so 30 extra, meaning instead of 9058 I had another 2400 points, so 11458 points, or 4458 to work with, meaning 1486 seconds or 24 minutes 26 seconds.
Steam thread that explains scoring:
• i speedrun bad minecraft
File that explains scoring:
C:\Program Files (x86)\Steam\steamapps\common\Mimic Logic\www\js\plugins
file name is Goal
00:00 nerd stuff
02:31 robbers
13:38 throwaway
19:30 promising attempt
29:06 also promising
34:53 numbers
store.steampowered.com/app/24...