My fastest speedrun of a 10 stage has been 26:14 so far (in-game/endscreen clock). Got 2 Dreadnoughts. Using the Juggernaut. The Subata and the Bulldog are very similar in that they both do double bullets for the final OC. The difference is the Bulldog targets anything while the Buttgun only targets rear enemies.
I just had the most epic Scanner plus 2 naydez.. morning build. Litteraly 9 scanners. At stage 7 i could not even spend all my nitra if i tried At final shoppe i left with 900 nitra Was spending 109 gold for rerolls and buying everything Acid was more than screen wide The boss egg accidentally got busted and the dreadnought died in 1 micro second I was mining the whole map by stage 3 Every block I found that you need to prioritize Move speed more than anything I was doing this with 0 damage upgrades or artifacts I felt like a god
the fastest total time is more exciting mainly because of all the quick and bad decisions you have to make! but i can see how both ways have their place, every decision is critical when you're going for the fastest "time spent" stat...