Great work! Keep it up!
This is not a Keen mod, those are just secret/bonus levels in huge unrelated project, that is soon to be released.A question i have, why do you decided for 2d objects in a 3d world?
Project/mod that has All-2D enemies, Bosses and small scenery - as intentional creative decision.
There are no 3D enemies or pickups in our mod (not only in Keen levels of it), and there is no reason to change that for a few bonus "tribute" side levels.
Not only it won't look the nostalgic tribute it intends to be - it wouldn't fit the retro style of the rest of the mod, and will require unproportional and undesired efforts for such small unrelated bonus.