Not sure if this should go in Arsenal or New Recruits, since I haven't touched this game in forever.
Anyway! I'm having a bit of an issue with what route I should go with to keep bombing into T3.
My only 4* armor is the Heavy Demo set, with a few 3* sets and lower.
But I do have a good set of bombs, including Master Blast, Irontech 4*, and Spike Shower. Including almost all the vapor bombs of varying levels at or lower than 4*.
My issue is if I should focus on weapons or armor, since my major source of income ingame is either dying repeatedly at the JK mission due to being bad (getting better and relearning, thank god for all these sparks), or playing the AH with orbs.
Get anything that help boost your bomb CTR to very high/max first (Volcanic Demo, Battle Sprite Perk, Elite Bomb Focus Module or Chaos, Chaos > Mad Bomber after update) then save up energy to purchase OCH expansion since one of the best bomb is dark retribution. Use spark in wise manner, it comes rarely, also a bit pain when you start running out and buy 20 energy per spark. See some youtube video Spiral Knight Bombing stuff? Also, if I were you, I rather practice solo until I died for the second time and go back, instead of using spark.
Once you play tier 3 often, alchemy orbs comes easier compared to radiant fire crystals (used for 5* gears). So consider to just leave 5* armor at level 1, and 5* weapon at level 5, when you have limited radiants. However, you can leave vapor type bomb at level 1. Use that 100% chance to heat level, anyhow.