Megaman Quest 2 is intended to be a full 8 stage, 4 fortress game. The intention is to play the 8 boss stages in any order, unlocking their power in subsequent stages. My goal was to create a little longer than traditional Mega Man stages (around 35-45 screens). Each main stage should be completable with no damage with just the Mega Buster, with some obviously being easier than others to no damage with the buster alone. The stages are also harder than most Mega Man games but I really did try to make them fun and fair challenges. I don't think any stage ended up feeling unfair and I'm proud of the result.

There are secrets in certain stages, most requiring one power. The big secrets, being Uber Chain and Item-3 come from Punk / Dark Man respectively. To obtain Uber Chain, you need Drill Bomb, Salt Water and Thunder Claw and it is located near the end of the Robot Incinerator stage. To get the Item-3, you'd need Screw Crusher and Uber Chain. It comes from the Ancient Ruins stage near the 1st checkpoint. Snake Man's stage has an M tank if you have Item-3 as well.

The fortress stages do ramp up the difficulty some and it is highly encouraged to use your whole arsenal to get through. However, they still can be completed buster only. As far as recommended order (avoiding any backtracking if getting the main items), I'd go:

Time then Cut then Pump then Clown(Strike) then Drill then Punk then Dark and finally Snake (Toad).

Boss Weaknesses:

Time Man - Thunder Claw
Dark Man - Time Slow
Drill Man (Grenade Man) - Grab Buster
Pump Man (Neptune) - Drill Bomb / Mega Buster
Punk - Salt Water
Cut Man - Screw Crusher
Toad Man (Snake Man) - Rolling Cutter
Strike Man (Clown Man) - Search Snake / Mega Buster
Fortress Reoccurring Boss (Enker) - Grab Buster / Thunder Claw
Fortress 1 - Salt Water / Shine
Fortress 2 - Search Snake
Fortress 3 - Rolling Cutter
Wily - Salt Water / Drill Bomb