I'm going to release extended version/sequel of Knightin' really soon. I haven't uploaded all of my older games to itch yet (but I'll do it one day). You may check them out if you want. My full game collection can be found on gamejolt and on my website.
Wait a minute, you're the creator of Ivan Fukkoff and Sunkin's Wrath!? I enjoyed playing those games, thought I could never quite finish the Sunkin game, probably because it got too hard at a particular boss, though I'm not sure which one :p
Anyhow, I haven't played the game for some time, so I think I got stuck at the giant wizard boss that shoots projectiles at you while jumping in and out of a lava-filled hole in the ground
It's the final boss. His only weak spot is the eye. You have to use trampolines to reach the height needed for attack. He's not too hard if you have obtained the energy shield from the shop. Shield costs 5 diamonds which are all located in the same location (ethereal city).
Hmm, I'll have to dig around in my external hard drive for the game, if I still have it; I might even resume playing the game from where I last stopped, or if not, I would be more than happy to start over :p
Hmm, when I downloaded the 1.4.2 version and opened it, I found that the screen was too high for my screen. I had already checked the Windowed mode, but it's still too tall for my screen :(
Oh, it's a shame... Sunkin's Wrath resolution 1024x768. I developed this game back in 2012 on a 4:3 monitor. I assume that you're playing on the notebook with the resolution 1280x720 or lower.