There's definitely a big element of luck in BM silver, but trust me, if I can beat it, you probably can too. It won't be easy and it may take you 10 tries of where you get close but don't quite make it, but with the right strat (goblin/dwarf, bearmace, etc) and careful blood pool conservation you can do it.
Problem I kept running into was accidentally stepping into blood pools when exploring. I found that if I moved myself fromthe other end of my explored space to the tile next to a blood pool, B2P would be more likely to reveal the tiles adjacent to the blood pool I wanted to conserve. In this way you can preserve more pools leading up to the boss. Usually with BM you drink blood to get health to convert to mana during leveling, but in this challenge its better to use your mana pots first so you get the most out of Sanguine.
Also, the boss's plants are either poison, manaburn, or corrosive. Poison and manaburn are irrelevant b/c you'll be out of blackspace, will be primarily hitting the boss with physical attacks (bysepps is almost better than fireball against the boss, 3 blood pools = full health and a bysepps cast against Trikkistix). Save a burn salve for the corrosive plants because you will inevitably pick up a few stacks during the fight, and after when you clear plants out when you get to his second form. The first time I beat BM silver, I had over 100 stacks of corrosion from cleaning out plants upon getting to his second form, and a single burn salve got rid of them all.