I play SRB2 like this (player 1):
• Camera: Left arrow, right arrow, . (up) and , (down)
• Controls: Up (forward), Down (backwards), Nmp*8 (Left), Nmp9 (Right). Nmp1 (jump), Nmp2 (spin), Nmp3 (Ring throw), Nmp4 (Normal Ring Throw) Nmp5 & 6 (Previous & Next weapon), Nmp7 (Toss flag)
• Custom: *...