Such an amazing indie game so far, Skywin! While I love what you have so far, a few things specifically bug me.
1: How come you have to jump off a ladder to drop down? Can't you just have players press down to go down they you wanted to? I can understand some sections requiring not pressing down so they don't die or get damaged, but still.
2: Dalpangpong (The snail boss in 2-Boss) seems a little too hard for this world, especially the third phase.
3: This is a nitpick, but Ray doesn't have a special animation for entering doors, oddly enough. You can probably add this much later in development, but you don't have to if you don't want to.
And now, my comments on each boss and level.
Always nice to have an intro level for newbies to learn the ropes.
Same as above, but with new enemies and physics.
Now that Ray's gotten his power, the levels will definitely rank up.
SO MUCH PUFFBALLS! This is when things start to get real, for sure.
Boss has the right difficulty curve. Nice work.
Ray's got the sword techniques, and that will definitely rank things up even MORE.
Lost my first life here. Definitely where people should be alert, especially with the stronger cannons.
Zombies! So much zombies! (read: Very nice breather level.)
Very nice gimmick, albeit rising up in difficulty, it's very creative.
I lost so many lives on this boss. Don't worry, the boss is still fun, just difficult.
A very well-needed breather level, introducing TMT's. I didn't know they could drop mines!
Another cool gimmick level with the flying ducks dropping bombs from above. I call this level "Duck and Cover". =P
Those Crayon Missile-shooting Coke cans in carts are more annoying than I initially thought.
First puzzle level in the game, and quite a clever one. Great work.
Very fun boss, this guy. I was expecting more of his kind in the fight, but nope, we get those ducks, flash bombs, and mines, all from various parts of the city. Excellent work.
Also a fun boss. If you're careful, he's actually pretty easy and predictable. Glad I could help you out a little with him.
I won't go over the Extra levels, but I will just say: They're HARD
I give this game a 8.5/10 so far. Keep up the good work. I know you're working on World 6 by now, so that means World 5 will be up next after that. Can't wait to see what the next 3 worlds will feature!
R.I.P. eXcavator... You will always have a place in our hearts...