[Guide] A way to make this game easy.
I finally killed that Skullhead boss (the hardest boss mob) without much of difficulty which has me earned 2 achievements "Kill every boss in a single run" and "kill every boss". That Skullhead boss was the last boss I needed to kill for the achievements. Here is how I did it.
Start a seeded game. Name of seed is, without quotes, "RobotLovesKitty" (make sure these R, L, K letters are capitalized). This seed, there is a goggle on 2nd floor, massive sword on 3rd floor, and random-summon-anything tome on level 4. This is pretty much perfect. Make sure you pick up all the potions on your way to level 4. Start drinking all potions, make sure you write down what does a ___ potion do! The most important one is the one that increase your attack power. You need 2 of that. Naturally, you consume the first one to see if it gives you the attack. The second one, you want to keep it until your maximum damage possible exceed 1,000.
Ok now...with giant sword and that tome, go down to level 6. Find the room that happen to be a long hallway with a column in the middle of it. That column, you'll notice you can't jump when you're under it. This is perfect in case you summon a giant minotaur or that devil boss. They can't get through and you can hit them without getting hurt because of that massive sword. That is the place where you will keep on summoning and summoning constantly to powerlevel farm yourself. There is ONE boss you have to HOPE to summon with that tome. It is the large robot boss with 2 big eyes. That's the one. Do NOT kill him. Let him spawn these flying ones and slow robot mobs. Why? the slow walking robot drops 2 cube of EXP, each providing you +50 exp. This makes you powerlevel so fast. I reached 1,000 damage within 10 minutes of farming Robot Boss' spawns.
If you happen to prematurely summon Skullhead boss...tough luck, just get out of that room fast. Once powerleveled, make sure to drink that +Damage potion whatever the color you found out. You should able to take out Skullhead boss 10-15 hits. Also can 1 KO its' nasty speedy-skeleton spawns. You can knock out the boss right away if you summon him without him spawning a single mob. (if you can ditch out enough damage rapidly)
At that point, after killing Skullhead boss, you can 1 KO hit devil boss and giant minotaur mobs at ease. You can nearly 1 KO all other bosses. (not sure if Robot and Unicorn bosses can be 1 KO'd at that point) This meant your journey to treasure and back will be very very easy. 1 KO everything.
Yeah, this kinda make the game pointless...but...like some of you...I hunt the achievements. Now, I need to figure out how to get the Beat Impossible achievement...that is really hard to get. Once saw a minotaur front of level 1 entrance. Ridiculious, lmao.
Hope this guide helped, thanks for reading.